diff --git a/Modules/Core/files.cmake b/Modules/Core/files.cmake
index 7b481c1ce2..b4f33cdb1e 100644
--- a/Modules/Core/files.cmake
+++ b/Modules/Core/files.cmake
@@ -1,320 +1,321 @@
 file(GLOB_RECURSE H_FILES RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "${CMAKE_CURRENT_SOURCE_DIR}/include/*")
 
 set(CPP_FILES
   mitkCoreActivator.cpp
   mitkCoreObjectFactoryBase.cpp
   mitkCoreObjectFactory.cpp
   mitkCoreServices.cpp
   mitkException.cpp
 
   Algorithms/mitkBaseDataSource.cpp
   Algorithms/mitkClippedSurfaceBoundsCalculator.cpp
   Algorithms/mitkCompareImageDataFilter.cpp
   Algorithms/mitkCompositePixelValueToString.cpp
   Algorithms/mitkConvert2Dto3DImageFilter.cpp
   Algorithms/mitkDataNodeSource.cpp
   Algorithms/mitkExtractSliceFilter.cpp
   Algorithms/mitkExtractSliceFilter2.cpp
   Algorithms/mitkHistogramGenerator.cpp
   Algorithms/mitkImageChannelSelector.cpp
   Algorithms/mitkImageSliceSelector.cpp
   Algorithms/mitkImageSource.cpp
   Algorithms/mitkImageTimeSelector.cpp
   Algorithms/mitkImageToImageFilter.cpp
   Algorithms/mitkImageToSurfaceFilter.cpp
   Algorithms/mitkMultiComponentImageDataComparisonFilter.cpp
   Algorithms/mitkPlaneGeometryDataToSurfaceFilter.cpp
   Algorithms/mitkPointSetSource.cpp
   Algorithms/mitkPointSetToPointSetFilter.cpp
   Algorithms/mitkRGBToRGBACastImageFilter.cpp
   Algorithms/mitkSubImageSelector.cpp
   Algorithms/mitkSurfaceSource.cpp
   Algorithms/mitkSurfaceToImageFilter.cpp
   Algorithms/mitkSurfaceToSurfaceFilter.cpp
   Algorithms/mitkUIDGenerator.cpp
   Algorithms/mitkVolumeCalculator.cpp
 
   Controllers/mitkBaseController.cpp
   Controllers/mitkCallbackFromGUIThread.cpp
   Controllers/mitkCameraController.cpp
   Controllers/mitkCameraRotationController.cpp
   Controllers/mitkLimitedLinearUndo.cpp
   Controllers/mitkOperationEvent.cpp
   Controllers/mitkPlanePositionManager.cpp
   Controllers/mitkProgressBar.cpp
   Controllers/mitkRenderingManager.cpp
   Controllers/mitkSliceNavigationController.cpp
   Controllers/mitkSlicesCoordinator.cpp
   Controllers/mitkStatusBar.cpp
   Controllers/mitkStepper.cpp
   Controllers/mitkTestManager.cpp
   Controllers/mitkUndoController.cpp
   Controllers/mitkVerboseLimitedLinearUndo.cpp
   Controllers/mitkVtkLayerController.cpp
   DataManagement/mitkAnatomicalStructureColorPresets.cpp
   DataManagement/mitkArbitraryTimeGeometry.cpp
   DataManagement/mitkAbstractTransformGeometry.cpp
   DataManagement/mitkAnnotationProperty.cpp
   DataManagement/mitkApplicationCursor.cpp
   DataManagement/mitkApplyTransformMatrixOperation.cpp
   DataManagement/mitkBaseData.cpp
   DataManagement/mitkBaseGeometry.cpp
   DataManagement/mitkBaseProperty.cpp
   DataManagement/mitkChannelDescriptor.cpp
   DataManagement/mitkClippingProperty.cpp
   DataManagement/mitkColorProperty.cpp
   DataManagement/mitkDataNode.cpp
   DataManagement/mitkDataStorage.cpp
   DataManagement/mitkEnumerationProperty.cpp
   DataManagement/mitkFloatPropertyExtension.cpp
   DataManagement/mitkGeometry3D.cpp
   DataManagement/mitkGeometryData.cpp
   DataManagement/mitkGeometryTransformHolder.cpp
   DataManagement/mitkGroupTagProperty.cpp
   DataManagement/mitkGenericIDRelationRule.cpp
   DataManagement/mitkIdentifiable.cpp
   DataManagement/mitkImageAccessorBase.cpp
   DataManagement/mitkImageCaster.cpp
   DataManagement/mitkImageCastPart1.cpp
   DataManagement/mitkImageCastPart2.cpp
   DataManagement/mitkImageCastPart3.cpp
   DataManagement/mitkImageCastPart4.cpp
   DataManagement/mitkImage.cpp
   DataManagement/mitkImageDataItem.cpp
   DataManagement/mitkImageDescriptor.cpp
   DataManagement/mitkImageReadAccessor.cpp
   DataManagement/mitkImageStatisticsHolder.cpp
   DataManagement/mitkImageVtkAccessor.cpp
   DataManagement/mitkImageVtkReadAccessor.cpp
   DataManagement/mitkImageVtkWriteAccessor.cpp
   DataManagement/mitkImageWriteAccessor.cpp
   DataManagement/mitkIntPropertyExtension.cpp
   DataManagement/mitkIPersistenceService.cpp
   DataManagement/mitkIPropertyAliases.cpp
   DataManagement/mitkIPropertyDescriptions.cpp
   DataManagement/mitkIPropertyExtensions.cpp
   DataManagement/mitkIPropertyFilters.cpp
   DataManagement/mitkIPropertyOwner.cpp
   DataManagement/mitkIPropertyPersistence.cpp
   DataManagement/mitkIPropertyProvider.cpp
   DataManagement/mitkLandmarkProjectorBasedCurvedGeometry.cpp
   DataManagement/mitkLandmarkProjector.cpp
   DataManagement/mitkLevelWindow.cpp
   DataManagement/mitkLevelWindowManager.cpp
   DataManagement/mitkLevelWindowPreset.cpp
   DataManagement/mitkLevelWindowProperty.cpp
   DataManagement/mitkLine.cpp
   DataManagement/mitkLookupTable.cpp
   DataManagement/mitkLookupTableProperty.cpp
   DataManagement/mitkLookupTables.cpp # specializations of GenericLookupTable
   DataManagement/mitkMaterial.cpp
   DataManagement/mitkMemoryUtilities.cpp
   DataManagement/mitkModalityProperty.cpp
   DataManagement/mitkModifiedLock.cpp
   DataManagement/mitkNodePredicateAnd.cpp
   DataManagement/mitkNodePredicateBase.cpp
   DataManagement/mitkNodePredicateCompositeBase.cpp
   DataManagement/mitkNodePredicateData.cpp
   DataManagement/mitkNodePredicateDataType.cpp
   DataManagement/mitkNodePredicateDataUID.cpp
   DataManagement/mitkNodePredicateDimension.cpp
   DataManagement/mitkNodePredicateFirstLevel.cpp
   DataManagement/mitkNodePredicateFunction.cpp
   DataManagement/mitkNodePredicateGeometry.cpp
   DataManagement/mitkNodePredicateNot.cpp
   DataManagement/mitkNodePredicateOr.cpp
   DataManagement/mitkNodePredicateProperty.cpp
   DataManagement/mitkNodePredicateDataProperty.cpp
   DataManagement/mitkNodePredicateSource.cpp
   DataManagement/mitkNumericConstants.cpp
   DataManagement/mitkPlaneGeometry.cpp
   DataManagement/mitkPlaneGeometryData.cpp
   DataManagement/mitkPlaneOperation.cpp
   DataManagement/mitkPlaneOrientationProperty.cpp
   DataManagement/mitkPointOperation.cpp
   DataManagement/mitkPointSet.cpp
   DataManagement/mitkPointSetShapeProperty.cpp
   DataManagement/mitkProperties.cpp
   DataManagement/mitkPropertyAliases.cpp
   DataManagement/mitkPropertyDescriptions.cpp
   DataManagement/mitkPropertyExtension.cpp
   DataManagement/mitkPropertyExtensions.cpp
   DataManagement/mitkPropertyFilter.cpp
   DataManagement/mitkPropertyFilters.cpp
   DataManagement/mitkPropertyKeyPath.cpp
   DataManagement/mitkPropertyList.cpp
   DataManagement/mitkPropertyListReplacedObserver.cpp
   DataManagement/mitkPropertyNameHelper.cpp
   DataManagement/mitkPropertyObserver.cpp
   DataManagement/mitkPropertyPersistence.cpp
   DataManagement/mitkPropertyPersistenceInfo.cpp
   DataManagement/mitkPropertyRelationRuleBase.cpp
   DataManagement/mitkProportionalTimeGeometry.cpp
   DataManagement/mitkRenderingModeProperty.cpp
   DataManagement/mitkResliceMethodProperty.cpp
   DataManagement/mitkRestorePlanePositionOperation.cpp
   DataManagement/mitkRotationOperation.cpp
   DataManagement/mitkScaleOperation.cpp
   DataManagement/mitkSlicedData.cpp
   DataManagement/mitkSlicedGeometry3D.cpp
   DataManagement/mitkSmartPointerProperty.cpp
   DataManagement/mitkStandaloneDataStorage.cpp
   DataManagement/mitkStringProperty.cpp
   DataManagement/mitkSurface.cpp
   DataManagement/mitkSurfaceOperation.cpp
+  DataManagement/mitkSourceImageRelationRule.cpp
   DataManagement/mitkThinPlateSplineCurvedGeometry.cpp
   DataManagement/mitkTimeGeometry.cpp
   DataManagement/mitkTransferFunction.cpp
   DataManagement/mitkTransferFunctionInitializer.cpp
   DataManagement/mitkTransferFunctionProperty.cpp
   DataManagement/mitkTemporoSpatialStringProperty.cpp
   DataManagement/mitkUIDManipulator.cpp
   DataManagement/mitkVector.cpp
   DataManagement/mitkVectorProperty.cpp
   DataManagement/mitkVtkInterpolationProperty.cpp
   DataManagement/mitkVtkRepresentationProperty.cpp
   DataManagement/mitkVtkResliceInterpolationProperty.cpp
   DataManagement/mitkVtkScalarModeProperty.cpp
   DataManagement/mitkVtkVolumeRenderingProperty.cpp
   DataManagement/mitkWeakPointerProperty.cpp
   DataManagement/mitkIPropertyRelations.cpp
   DataManagement/mitkPropertyRelations.cpp
 
   Interactions/mitkAction.cpp
   Interactions/mitkBindDispatcherInteractor.cpp
   Interactions/mitkCrosshairPositionEvent.cpp
   Interactions/mitkDataInteractor.cpp
   Interactions/mitkDispatcher.cpp
   Interactions/mitkDisplayCoordinateOperation.cpp
   Interactions/mitkDisplayInteractor.cpp
   Interactions/mitkDisplayActionEventBroadcast.cpp
   Interactions/mitkDisplayActionEventFunctions.cpp
   Interactions/mitkDisplayActionEventHandler.cpp
   Interactions/mitkEventConfig.cpp
   Interactions/mitkEventFactory.cpp
   Interactions/mitkEventRecorder.cpp
   Interactions/mitkEventStateMachine.cpp
   Interactions/mitkInteractionEventConst.cpp
   Interactions/mitkInteractionEvent.cpp
   Interactions/mitkInteractionEventHandler.cpp
   Interactions/mitkInteractionEventObserver.cpp
   Interactions/mitkInteractionKeyEvent.cpp
   Interactions/mitkInteractionPositionEvent.cpp
   Interactions/mitkInteractionSchemeSwitcher.cpp
   Interactions/mitkInternalEvent.cpp
   Interactions/mitkMouseDoubleClickEvent.cpp
   Interactions/mitkMouseModeSwitcher.cpp
   Interactions/mitkMouseMoveEvent.cpp
   Interactions/mitkMousePressEvent.cpp
   Interactions/mitkMouseReleaseEvent.cpp
   Interactions/mitkMouseWheelEvent.cpp
   Interactions/mitkPointSetDataInteractor.cpp
   Interactions/mitkSinglePointDataInteractor.cpp
   Interactions/mitkStateMachineAction.cpp
   Interactions/mitkStateMachineCondition.cpp
   Interactions/mitkStateMachineContainer.cpp
   Interactions/mitkStateMachineState.cpp
   Interactions/mitkStateMachineTransition.cpp
   Interactions/mitkStdDisplayActionEventHandler.cpp
   Interactions/mitkVtkEventAdapter.cpp
   Interactions/mitkVtkInteractorStyle.cxx
   Interactions/mitkXML2EventParser.cpp
 
   IO/mitkAbstractFileIO.cpp
   IO/mitkAbstractFileReader.cpp
   IO/mitkAbstractFileWriter.cpp
   IO/mitkCustomMimeType.cpp
   IO/mitkFileReader.cpp
   IO/mitkFileReaderRegistry.cpp
   IO/mitkFileReaderSelector.cpp
   IO/mitkFileReaderWriterBase.cpp
   IO/mitkFileWriter.cpp
   IO/mitkFileWriterRegistry.cpp
   IO/mitkFileWriterSelector.cpp
   IO/mitkGeometry3DToXML.cpp
   IO/mitkIFileIO.cpp
   IO/mitkIFileReader.cpp
   IO/mitkIFileWriter.cpp
   IO/mitkGeometryDataReaderService.cpp
   IO/mitkGeometryDataWriterService.cpp
   IO/mitkImageGenerator.cpp
   IO/mitkImageVtkLegacyIO.cpp
   IO/mitkImageVtkXmlIO.cpp
   IO/mitkIMimeTypeProvider.cpp
   IO/mitkIOConstants.cpp
   IO/mitkIOMimeTypes.cpp
   IO/mitkIOUtil.cpp
   IO/mitkItkImageIO.cpp
   IO/mitkItkLoggingAdapter.cpp
   IO/mitkLegacyFileReaderService.cpp
   IO/mitkLegacyFileWriterService.cpp
   IO/mitkLocaleSwitch.cpp
   IO/mitkLog.cpp
   IO/mitkMimeType.cpp
   IO/mitkMimeTypeProvider.cpp
   IO/mitkOperation.cpp
   IO/mitkPixelType.cpp
   IO/mitkPointSetReaderService.cpp
   IO/mitkPointSetWriterService.cpp
   IO/mitkProportionalTimeGeometryToXML.cpp
   IO/mitkRawImageFileReader.cpp
   IO/mitkStandardFileLocations.cpp
   IO/mitkSurfaceStlIO.cpp
   IO/mitkSurfaceVtkIO.cpp
   IO/mitkSurfaceVtkLegacyIO.cpp
   IO/mitkSurfaceVtkXmlIO.cpp
   IO/mitkVtkLoggingAdapter.cpp
   IO/mitkPreferenceListReaderOptionsFunctor.cpp
 
   Rendering/mitkAbstractAnnotationRenderer.cpp
   Rendering/mitkAnnotationUtils.cpp
   Rendering/mitkBaseRenderer.cpp
   #Rendering/mitkGLMapper.cpp Moved to deprecated LegacyGL Module
   Rendering/mitkGradientBackground.cpp
   Rendering/mitkImageVtkMapper2D.cpp
   Rendering/mitkMapper.cpp
   Rendering/mitkAnnotation.cpp
   Rendering/mitkPlaneGeometryDataMapper2D.cpp
   Rendering/mitkPlaneGeometryDataVtkMapper3D.cpp
   Rendering/mitkPointSetVtkMapper2D.cpp
   Rendering/mitkPointSetVtkMapper3D.cpp
   Rendering/mitkRenderWindowBase.cpp
   Rendering/mitkRenderWindow.cpp
   Rendering/mitkRenderWindowFrame.cpp
   #Rendering/mitkSurfaceGLMapper2D.cpp Moved to deprecated LegacyGL Module
   Rendering/mitkSurfaceVtkMapper2D.cpp
   Rendering/mitkSurfaceVtkMapper3D.cpp
   Rendering/mitkVtkEventProvider.cpp
   Rendering/mitkVtkMapper.cpp
   Rendering/mitkVtkPropRenderer.cpp
   Rendering/mitkVtkWidgetRendering.cpp
   Rendering/vtkMitkLevelWindowFilter.cpp
   Rendering/vtkMitkRectangleProp.cpp
   Rendering/vtkMitkRenderProp.cpp
   Rendering/vtkMitkThickSlicesFilter.cpp
   Rendering/vtkNeverTranslucentTexture.cpp
 )
 
 set(RESOURCE_FILES
 Interactions/globalConfig.xml
 Interactions/DisplayInteraction.xml
 Interactions/DisplayConfig.xml
 Interactions/DisplayConfigPACS.xml
 Interactions/DisplayConfigPACSPan.xml
 Interactions/DisplayConfigPACSScroll.xml
 Interactions/DisplayConfigPACSZoom.xml
 Interactions/DisplayConfigPACSLevelWindow.xml
 Interactions/DisplayConfigMITK.xml
 Interactions/DisplayConfigMITKNoCrosshair.xml
 Interactions/DisplayConfigMITKRotation.xml
 Interactions/DisplayConfigMITKRotationUnCoupled.xml
 Interactions/DisplayConfigMITKSwivel.xml
 Interactions/DisplayConfigMITKLimited.xml
 Interactions/PointSet.xml
 Interactions/Legacy/StateMachine.xml
 Interactions/Legacy/DisplayConfigMITKTools.xml
 Interactions/PointSetConfig.xml
 
 mitkLevelWindowPresets.xml
 mitkAnatomicalStructureColorPresets.xml
 )
diff --git a/Modules/Core/include/mitkPropertyRelationRuleBase.h b/Modules/Core/include/mitkPropertyRelationRuleBase.h
index 3d5e652cba..30ed8d9bab 100644
--- a/Modules/Core/include/mitkPropertyRelationRuleBase.h
+++ b/Modules/Core/include/mitkPropertyRelationRuleBase.h
@@ -1,339 +1,341 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 All rights reserved.
 
 This software is distributed WITHOUT ANY WARRANTY; without
 even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.
 
 See LICENSE.txt or http://www.mitk.org for details.
 
 ===================================================================*/
 
 #ifndef mitkPropertyRelationRuleBase_h
 #define mitkPropertyRelationRuleBase_h
 
 #include "mitkIPropertyOwner.h"
 #include "mitkIdentifiable.h"
 
 #include "mitkException.h"
 #include "mitkNodePredicateBase.h"
 #include "mitkPropertyKeyPath.h"
 
 #include <MitkCoreExports.h>
 
 #include <string>
 
 namespace mitk
 {
   /**Base class to standardize/abstract/encapsulate rules and business logic to detect and define
   (property/data based) relations in MITK.
   Following important definitions must be regarded when using/implementing/specifing rule classes:
   - Releations represented by rules are directed relations that point from a source IPropertyOwner (Source)
   to a destination IPropertyOwner (Destination).
   - Rule can be abstract (indicated by IsAbstract()) or concrete. Abstract rules cannot be used to connect relations.
   Abstract rules can only be used to detect/indicate or disconnect relations. Therefore, in contrast to concrete rules,
   abstract rules can be used to indicate several relations that are established be "derived" rules. See e.g. GenericIDRelationRule:
   in its abstract state it cannot connect but be used to detect any type of generic ID relation.
   - A concrete rule ID (rule ID of a concrete rule) always "implements" a concrete relation type. E.g. In DICOM the
   way to express the source image relation to an input image and to a mask would be nearly the same
   and only differs by the encoded purpose. One may implement an interim or joined class that manages the mutual
   stuff, but the registered instances must be one concrete rule for "DICOM source input image" and one concrete rule for
   "DICOM source mask" and both rules must have distinct rule IDs.
   - Source may have several relations of a rule to different Destinations.
   Destination may have several relations of a rule from different Sources. But a specific source destination
   pair may have only one relation of a specific rule id (concrete rule). A specific source destination
   pair may however have multiple relations for an abstract rule.
   - The deletion of a Destination in the storage does not remove the relation implicitly. It becomes a "zombie" relation
   but it should still be documented, even if the destination is unknown. One has to explicitly
   disconnect a zombie relation to get rid of it.
   - Each relation has its own UID (relationUID) that can be used to address it.
 
   The basic concept of the rule design is that we have two layers of relation identification: Layer 1 is the ID-layer
   which uses the IIdentifiable interface and UIDs if available to encode "hard" relations. Layer 2 is the Data-layer
   which uses the properties of Source and Destination to deduce if there is a relation of the rule type.
   The ID-layer is completely implemented by this base class. The base class only falls back to the Data-layer
   (implemented by the concrete rule class) if the ID-layer is not sufficient or it is explicitly stated.
   Reasons for the introduction of the ID-layer are: 1st, data-defined relations may be weak (several Destinations are
   possible; e.g. DICOM source images may point to several loaded mitk images). But if explicitly a relation was
   connected it should be deduceable. 2nd, checks on a UID are faster then unnecessary data deduction.
 
   Rules use relation instance identifing (RII) properties in order to manage their relations that are stored in the
   Source. The RII-properties follow the following naming schema:
   "MITK.Relations.<InstanceID>.<RuleID>.[relationUID|destinationUID|ruleID|<data-layer-specific>]"
   - <InstanceID>: The unique index of the relation for the Source. Used to assign/group the properties to
   their relation. In the default implementation of this class the instance id is an positive integer (i>0).
   - relationUID: The UID of the relation. Set by the ID-layer (so by this class)
   - destinationUID: The UID of the Destination. Set by the ID-layer (so by this class) if Destination implements
   IIdentifiable.
   - ruleID: The identifier of the concrete rule that sets the property. Is specified by the derived class and set
   automaticaly be this base class.
   - <data-layer-specific>: Information needed by the Data-layer (so derived classes) to find the relationUID
   */
   class MITKCORE_EXPORT PropertyRelationRuleBase : public itk::Object
   {
   public:
     mitkClassMacroItkParent(PropertyRelationRuleBase, itk::Object);
     itkCloneMacro(Self);
     itkCreateAnotherMacro(Self);
 
     using RuleIDType = std::string;
     using RelationUIDType = Identifiable::UIDType;
     using RelationUIDVectorType = std::vector<RelationUIDType>;
 
     /** Enum class for different types of relations. */
     enum class RelationType
     {
       None = 0,           /**< Two IPropertyOwner have no relation under the rule.*/
       Implicit_Data = 1,  /**< Two IPropertyOwner have a relation, but it is only deduced from the Data-layer and they
                    were never explicitly connected.*/
       Connected_Data = 2, /**< Two IPropertyOwner have a relation and there where connected on the Data-layer (so a bit
                    "weaker" as ID). Reasons for the missing ID connection could be that Destintination has not
                    IIdentifiable implemented.*/
       Connected_ID = 4    /**< Two IPropertyOwner have a relation and are fully explictly connected.*/
     };
 
     /** Returns the generic root path for relation rules ("MITK.Relations").*/
     static PropertyKeyPath GetRootKeyPath();
 
     /** Returns an ID string that identifies the rule class.
     @post The returned rule ID must met the preconditions of a PropertyKeyPath element name
     (see mitk::PropertyKeyPath*/
     virtual RuleIDType GetRuleID() const = 0;
 
     /** Returns a human readable string that can be used to describe the rule. Does not need to be unique.*/
     virtual std::string GetDisplayName() const = 0;
 
     /** Returns a human readable string that can be used to describe the role of a source in context of the rule
      * instance.*/
     virtual std::string GetSourceRoleName() const = 0;
     /** Returns a human readable string that can be used to describe the role of a destionation in context of the rule
      * instance.*/
     virtual std::string GetDestinationRoleName() const = 0;
 
     /** Returns if the instance is a abstract rule (true). Default implementation is true. Overwrite and reimplement
     if another behavior is needed.*/
     virtual bool IsAbstract() const;
 
     /** This method checks if owner is eligible to be a Source for the rule. The default implementation returns a
     True for every valid IPropertyProvider (so only a null_ptr results into false). May be reimplement by derived rules if
     they have requirements on potential Sources).*/
     virtual bool IsSourceCandidate(const IPropertyProvider *owner) const;
 
     /** This method checks if owner is eligible to be a Destination for the rule. The default implementation returns a
     True for every valid IPropertyProvider (so only a null_ptr results into false). May be reimplement by derived rules if
     they have requirements on potential Sources).*/
     virtual bool IsDestinationCandidate(const IPropertyProvider *owner) const;
 
     /** Returns true if the passed owner is a Source of a relation defined by the rule so has at least one relation of
     type Connected_Data or Connected_ID.
     @pre owner must be a pointer to a valid IPropertyProvider instance.*/
     bool IsSource(const IPropertyProvider *owner) const;
 
     /** Returns the relation type of the passed IPropertyOwner instances.
     @pre source must be a pointer to a valid IPropertyProvider instance.
     @pre destination must be a pointer to a valid IPropertyProvider instance.
     */
     RelationType HasRelation(const IPropertyProvider *source, const IPropertyProvider *destination) const;
 
     /** Returns a vector of relation UIDs for all relations of this rule instance that are defined for
     the passed source (so relations of type Connected_Data and Connected_ID).
     @pre source must be a pointer to a valid IPropertyOwner instance.
     */
     RelationUIDVectorType GetExistingRelations(const IPropertyProvider *source) const;
 
     /** Returns the relation UID(s) for the passed source and destination of this rule instance.
     If the rule is abstract multiple relation UIDs might be returned. In case of concrete rule only
     one relation UID.
     If the passed instances have no explicit relation (so of type Connected_Data or Connected_ID),
     no ID can be deduced and an empty relation UID vector is returned.
     @pre source must be a pointer to a valid IPropertyOwner instance.
     @pre destination must be a pointer to a valid IPropertyOwner instance.*/
     RelationUIDVectorType GetRelationUIDs(const IPropertyProvider *source, const IPropertyProvider *destination) const;
 
     /** Returns the relation UID for the passed source and destination of this rule instance.
     If the passed instances have no explicit relation (so of type Connected_Data or Connected_ID),
     no ID can be deduced and an exception will be thrown. If more then one relation is found, also
     an exception will be thrown. Thus only use this convinience method, if you are sure that one(!)
     relation UID can exist.
     @pre source must be a pointer to a valid IPropertyOwner instance.
     @pre destination must be a pointer to a valid IPropertyOwner instance.
     @pre Source and destination have one relation of type Connected_Data or Connected_ID; otherwise
     if no relation exists a NoPropertyRelationException is thrown; if more than one relation exists
     a default MITK expception is thrown.*/
     RelationUIDType GetRelationUID(const IPropertyProvider *source, const IPropertyProvider *destination) const;
 
     /**Predicate that can be used to find nodes that qualify as source for that rule (but must not be a source yet).
     Thus all nodes where IsSourceCandidate() returns true. */
     NodePredicateBase::ConstPointer GetSourceCandidateIndicator() const;
     /**Predicate that can be used to find nodes that qualify as destination for that rule (but must not be a destination
     yet). Thus all nodes where IsDestinationCandidate() returns true. */
     NodePredicateBase::ConstPointer GetDestinationCandidateIndicator() const;
     /**Predicate that can be used to find nodes that are Sources of that rule and explicitly connected.
     Thus all nodes where IsSource() returns true.*/
     NodePredicateBase::ConstPointer GetConnectedSourcesDetector() const;
     /**Predicate that can be used to find nodes that are as source related to the passed Destination under the rule
     @param destination Pointer to the Destination instance that should be used for detection.
     @param minimalRelation Defines the minimal strength of the relation type that should be detected.
     @pre Destination must be a valid instance.*/
     NodePredicateBase::ConstPointer GetSourcesDetector(
       const IPropertyProvider *destination, RelationType minimalRelation = RelationType::Implicit_Data) const;
     /**Predicate that can be used to find nodes that are as Destination related to the passed Source under the rule
     @param source Pointer to the Source instance that should be used for detection.
     @param minimalRelation Defines the minimal strength of the relation type that should be detected.
     @pre Destination must be a valid instance.*/
     NodePredicateBase::ConstPointer GetDestinationsDetector(
       const IPropertyProvider *source, RelationType minimalRelation = RelationType::Implicit_Data) const;
     /**Returns a predicate that can be used to find the Destination of the passed Source for a given relationUID.
     @param source Pointer to the Source instance that should be used for detection.
     @param minimalRelation Defines the minimal strength of the relation type that should be detected.
     @pre source must be a valid instance.
     @pre relationUID must identify a relation of the passed source and rule. (This must be in the return of
     this->GetExistingRelations(source). */
     NodePredicateBase::ConstPointer GetDestinationDetector(const IPropertyProvider *source,
                                                            RelationUIDType relationUID) const;
 
     /**Disconnect the passed instances. Afterwards they have a relation of None or Implicit_Data.
     All RII-properties in the source for the passed destination will be removed.
     @pre source must be a valid instance.
     @pre destination must be a valid instance.*/
     void Disconnect(IPropertyOwner *source, const IPropertyProvider *destination) const;
     /**Disconnect the source from the passed relationUID (usefull for "zombie relations").
     All RII-properties in the source for the passed relationUID will be removed.
     If the relationUID is not part of the source. Nothing will be changed.
     @pre source must be a valid instance.*/
     void Disconnect(IPropertyOwner *source, RelationUIDType relationUID) const;
 
   protected:
     PropertyRelationRuleBase() = default;
     ~PropertyRelationRuleBase() override = default;
 
     using InstanceIDType = std::string;
     using InstanceIDVectorType = std::vector<InstanceIDType>;
     static InstanceIDType NULL_INSTANCE_ID();
 
     /** Returns the instance IDs for the passed source and destination for this rule instance.
     If the passed source and destination instances has no explicit relation on the ID layer (Connected_ID),
     an empty vector will be returned.
     @remark Per definition of property relation rules only 0 or 1 instance should be found for one provider
     pair and concrete rule. But for there might be more then one instanceID, because the rule is abstract and
     supports multiple rule IDs. 2) the data layer may be ambiguous and therefore multiple relation instances of the rule instance
     could match. The implementation of this function should report all relation instances. The calling function
     will take care.
     @pre source must be a pointer to a valid IPropertyProvider instance.
     @pre destination must be a pointer to a valid IPropertyProvider instance.*/
     InstanceIDVectorType GetInstanceID_IDLayer(const IPropertyProvider *source,
                                                                          const IPropertyProvider *destination) const;
 
     /** Is called if an instance ID cannot be deduced on the ID-layer.
     Implement this method to check which existing relation(s) as Connected_Data exists between
     both passed instances. If the passed instances have no
     explicit relation of type Connected_Data, an empty vector will be returned.
     @remark Per definition of property relation rules only 0 or 1 instance should be found for one provider
     pair and concrete rule. But for 2 reasons there might be more then one instanceID: 1) the rule is abstract and
     supports multiple rule IDs. 2) the data layer may be ambiguous and therefore multiple relation instances of the rule instance
     could match. The implementation of this function should report all relation instances. The calling function
     will take care.
     @pre source must be a pointer to a valid IPropertyProvider instance.
     @pre destination must be a pointer to a valid IPropertyProvider instance.*/
     virtual InstanceIDVectorType GetInstanceID_datalayer(const IPropertyProvider *source,
                                                          const IPropertyProvider *destination) const = 0;
 
     /** Is called by HasRelation() if no relation of type Connected_ID (GetInstanceID_IDLayer()) or
     Connected_Data (GetInstanceID_datalayer()) is evident.
       Implement this method to deduce if the passed instances have a relation of type
       Implicit_Data.
       @pre source must be a pointer to a valid IPropertyProvider instance.
       @pre destination must be a pointer to a valid IPropertyProvider instance.
       */
     virtual bool HasImplicitDataRelation(const IPropertyProvider *source,
                                          const IPropertyProvider *destination) const = 0;
 
     /**Helper function that deduces the relation UID of the given relation instance.
     If it cannot be deduced an NoPropertyRelationException is thrown.*/
     RelationUIDType GetRelationUIDByInstanceID(const IPropertyProvider *source, const InstanceIDType &instanceID) const;
     /**Helper function that deduces the relation instance ID given the relation UID.
     If it cannot be deduced an NoPropertyRelationException is thrown.*/
     InstanceIDType GetInstanceIDByRelationUID(const IPropertyProvider *source,
                                               const RelationUIDType &relationUID) const;
 
     /**Explicitly connects the passed instances. Afterwards they have a relation of Connected_Data or Connected_ID (if a
     destination implements IIdentifiable). If the passed instance are already connected the old connection will be
     overwritten (and raised to the highest possible connection level).
     @remark This method has protected visibility in the base implementation, because it is a design decision of derived rule classes
     which interface they want to offer for connecting. It may just be made public (e.g. GenericIDRelationRule) or used by own implementations.
     @pre source must be a valid instance.
     @pre destination must be a valid instance.
     @pre the rule instance must not be abstract.
     @return Return the relation uid of the relation connected by this method call*/
     RelationUIDType Connect(IPropertyOwner *source, const IPropertyProvider *destination) const;
 
     /**Is called by Connect() to ensure that source has correctly set properties to resemble
     the relation on the data layer. This means that the method should set the properties that describe
     and encode the relation on the data layer (data-layer-specific relation properties).
     If the passed instance are already connected, the old settings should be
     overwritten. Connect() will ensure that source and destination are valid pointers.
     @param instanceID is the ID for the relation instance that should be connected. Existance of the relation instance
     is ensured.
     @pre source must be a valid instance.
     @pre destination must be a valid instance.*/
     virtual void Connect_datalayer(IPropertyOwner *source,
                                    const IPropertyProvider *destination,
                                    const InstanceIDType &instanceID) const = 0;
 
     /**This method is called by Disconnect() to remove all properties of the relation from the source that
     are set by Connect_datalayer().
     @remark All RII-properties of this relation will removed by Disconnect() after this method call.
     If the relationUID is not part of the source. Nothing will be changed. Disconnect() ensures that source is a valid
     pointer if called.
     @remark Disconnect() ensures that sourece is valid and only invokes if instance exists.*/
     virtual void Disconnect_datalayer(IPropertyOwner *source, const InstanceIDType &instanceID) const = 0;
 
     /** Returns if the passed rule ID is supported/relevant for the rule. Either because it is the very ID of the rule (default implementation) or because
     it is an abstract rule which also supports the rule ID.
     @return true: If the rule ID can handle the rule ID. false: the rule does not support the rule ID.*/
     virtual bool IsSupportedRuleID(const RuleIDType& ruleID) const;
 
     /** Helper function that generates a reg ex that can be used to find a specific RII property for the rule instance.
      * @param propName If not empty a PropertyPath element will added (with the passed value) after the <RuleID> element.
      * @param instanceID If not empty only for the reg ex will only valid for the passed instanceID. Otherwise for all.*/
     std::string GetRIIPropertyRegEx(const std::string propName = "", const InstanceIDType &instanceID = "") const;
 
     /**Helper function that deduces the instance ID out of a property name.
     If it cannot be deduced an MITK exception is thrown.*/
     static InstanceIDType GetInstanceIDByPropertyName(const std::string propName);
 
     /**Helper function that retrives the rule ID of a relation instance of a passed source.
      @pre source must be valid.
      @pre source must have a relation instance with this ID*/
     RuleIDType GetRuleIDByInstanceID(const IPropertyProvider *source,
       const InstanceIDType &instanceID) const;
 
     itk::LightObject::Pointer InternalClone() const override;
 
+    static std::vector<std::string> GetPropertyKeys(const mitk::IPropertyProvider *owner);
+
   private:
     /** Creats a relation UID*/
     static RelationUIDType CreateRelationUID();
 
     /**Prepares a new relation instance. Therefore an unused and valid instance ID for the passed source will be genarated
     and a relationUID property with the relationUID will be set to block the instance ID. The
     instance ID will be returned.
     @remark The method is guarded by a class wide mutex to avoid racing conditions in a scenario where rules are used
     concurrently.*/
     InstanceIDType CreateNewRelationInstance(IPropertyOwner *source, const RelationUIDType &relationUID) const;
   };
 
   /**Exception that is used by PropertyRelationRuleBase based classes to indicate that two objects have no relation.*/
   class NoPropertyRelationException : public Exception
   {
   public:
     mitkExceptionClassMacro(NoPropertyRelationException, Exception)
   };
 
 } // namespace mitk
 
 #endif
diff --git a/Modules/Core/include/mitkSourceImageRelationRule.h b/Modules/Core/include/mitkSourceImageRelationRule.h
new file mode 100644
index 0000000000..b631e5b3d8
--- /dev/null
+++ b/Modules/Core/include/mitkSourceImageRelationRule.h
@@ -0,0 +1,164 @@
+/*===================================================================
+
+The Medical Imaging Interaction Toolkit (MITK)
+
+Copyright (c) German Cancer Research Center,
+Division of Medical and Biological Informatics.
+All rights reserved.
+
+This software is distributed WITHOUT ANY WARRANTY; without
+even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.
+
+See LICENSE.txt or http://www.mitk.org for details.
+
+===================================================================*/
+
+#ifndef mitkGenericIDRelationRule_h
+#define mitkGenericIDRelationRule_h
+
+#include "mitkPropertyRelationRuleBase.h"
+#include "mitkImage.h"
+
+namespace mitk
+{
+  /**This rule class can be used for relations that reference an image as source for a destination entity.
+  (e.g. an image that is used to generate the relation source).
+  The ID-layer is supported like for GenericIDReleations.
+  So it can be used for all ID based relations between PropertyProviders
+  that also implement the interface identifiable.
+  In addition the rule uses the data-layer to deduce/define relations.
+  For this layer it uses properties compliant to DICOM. Thus (1) the information is stored in
+  a DICOM Source Image Sequence item (0x0008,0x2112) and (2) the destination must have properties
+  DICOM SOP Instance UIDs (0x0008, 0x0018) and DICOM SOP Class UID (0x0008, 0x0016). If the destination
+  does not have this properties, no connection can be made on the data-layer.
+  @remark Please note that PropertyRelationRules and DICOM use the term "source" differently. The DICOM
+  source (image) equals the PropertyRelationRule destination. This is due to
+  an inverted relation direction. So in the context of the SourceImageRelationRule interface a derived data is
+  the source and points to the original image, it derives from. In the context of DICOM this referenced original image would be
+  called source image (as the name of this class).
+  In order to be able to use this class for different relation types (DICOM would call it purposes),
+  the purposeTag is used. It must be specified when creating a rule instance.
+  The purposeTag will be used as suffix for the rule ID of the instance and therefore allows to create
+  specific and distinguishable rules instances based on this class.
+  One may also specify the display name and the role names of the instance. If not specified the default values
+  are used (display name: "<purposeTag> relation", source role name: "derived data",
+  destination role name: "source image")
+  */
+  class MITKCORE_EXPORT SourceImageRelationRule : public mitk::PropertyRelationRuleBase
+  {
+  public:
+    mitkClassMacro(SourceImageRelationRule, PropertyRelationRuleBase);
+    itkNewMacro(Self);
+    mitkNewMacro1Param(Self, const RuleIDType &);
+    mitkNewMacro2Param(Self, const RuleIDType &, const std::string &);
+    mitkNewMacro4Param(Self, const RuleIDType &, const std::string &, const std::string &, const std::string &);
+
+    using RuleIDType = PropertyRelationRuleBase::RuleIDType;
+    using RelationUIDType = PropertyRelationRuleBase::RelationUIDType;
+    using RelationUIDVectorType = PropertyRelationRuleBase::RelationUIDVectorType;
+
+    /** Returns an ID string that identifies the rule class */
+    RuleIDType GetRuleID() const override;
+
+    bool IsAbstract() const override;
+
+    /** Returns a human readable string that can be used to describe the rule. Does not need to be unique.*/
+    std::string GetDisplayName() const override;
+
+    /** Returns a human readable string that can be used to describe the role of a source in context of the rule
+     * instance.*/
+    std::string GetSourceRoleName() const override;
+    /** Returns a human readable string that can be used to describe the role of a destination in context of the rule
+     * instance.*/
+    std::string GetDestinationRoleName() const override;
+
+    bool IsDestinationCandidate(const IPropertyProvider *owner) const override;
+
+    /** Connects to passed images.
+    @remark destination must specifiy DICOM SOP Instance UIDs (0x0008, 0x0018) and DICOM SOP Class UID (0x0008, 0x0016)
+    in order to establish a connection on the data layer.*/
+    RelationUIDType Connect(Image *source, const Image *destination) const;
+
+  protected:
+    SourceImageRelationRule();
+    SourceImageRelationRule(const RuleIDType &purposeTag);
+    SourceImageRelationRule(const RuleIDType &purposeTag, const std::string &displayName);
+    SourceImageRelationRule(const RuleIDType &purposeTag,
+                          const std::string &displayName,
+                          const std::string &sourceRole,
+                          const std::string &destinationRole);
+    ~SourceImageRelationRule() override = default;
+
+    using InstanceIDType = PropertyRelationRuleBase::InstanceIDType;
+    using InstanceIDVectorType = PropertyRelationRuleBase::InstanceIDVectorType;
+
+    /** Helper function that returns a vector of all selections of the property DICOM.0008.2112 that refer to destination or all (if no destination is passed).*/
+    std::vector<std::string> GetReferenceSequenceIndices(const IPropertyProvider * source,
+      const IPropertyProvider * destination = nullptr) const;
+
+    /** Is called if a instance ID cannot be deduced on the ID-layer.
+    Implement this method to check which existing relation(s) as Connected_Data exists between
+    both passed instances. If the passed instances have no
+    explicit relation of type Connected_Data, an empty vector will be returned.
+    @remark Per definition of property relation rules only 0 or 1 instance should be found for one provider
+    pair and rule. But the data layer may be ambiguous and there for muliple relation instances of the rule instance
+    could match. The implementation of this function should report all relation instances. The calling function
+    will take care of this violation.
+    @pre source must be a pointer to a valid IPropertyProvider instance.
+    @pre destination must be a pointer to a valid IPropertyProvider instance.*/
+    InstanceIDVectorType GetInstanceID_datalayer(const IPropertyProvider *source,
+                                                         const IPropertyProvider *destination) const override;
+
+    /** Is called by HasRelation() if no relation of type Connected_ID (GetInstanceID_IDLayer()) or
+    Connected_Data (GetInstanceID_datalayer()) is evident.
+      Implement this method to deduce if the passed instances have a relation of type
+      Implicit_Data.
+      @pre source must be a pointer to a valid IPropertyProvider instance.
+      @pre destination must be a pointer to a valid IPropertyProvider instance.
+      */
+    bool HasImplicitDataRelation(const IPropertyProvider *source,
+                                         const IPropertyProvider *destination) const override;
+
+    /**Is called by Connect() to ensure that source has correctly set properties to resemble
+    the relation on the data layer. This means that the method should set the properties that describe
+    and encode the relation on the data layer (data-layer-specific relation properties).
+    If the passed instance are already connected, the old settings should be
+    overwritten. Connect() will ensure that source and destination are valid pointers.
+    @param instanceID is the ID for the relation instance that should be connected. Existance of the relation instance
+    is ensured.
+    @pre source must be a valid instance.
+    @pre destination must be a valid instance.*/
+    void Connect_datalayer(IPropertyOwner *source,
+                                   const IPropertyProvider *destination,
+                                   const InstanceIDType &instanceID) const override;
+
+    /**This method is called by Disconnect() to remove all properties of the relation from the source that
+    are set by Connect_datalayer().
+    @remark All RII-properties of this relation will removed by Disconnect() after this method call.
+    If the relationUID is not part of the source. Nothing will be changed. Disconnect() ensures that source is a valid
+    pointer if called.
+    @remark Disconnect() ensures that sourece is valid and only invokes if instance exists.*/
+    void Disconnect_datalayer(IPropertyOwner *source, const InstanceIDType &instanceID) const override;
+
+    virtual bool IsSupportedRuleID(const RuleIDType& ruleID) const override;
+
+    itk::LightObject::Pointer InternalClone() const override;
+
+    /**Prepares a new reference to an image on the data layer. Therefore an unused and valid sequence item index
+    for the passed source will be genarated and a relationUID property with the relationUID will be set to block the instance ID. The
+    instance ID will be returned.
+    @remark The method is guarded by a class wide mutex to avoid racing conditions in a scenario where rules are used
+    concurrently.*/
+    PropertyKeyPath::ItemSelectionIndex CreateNewSourceImageSequenceItem(IPropertyOwner *source) const;
+
+  private:
+    RuleIDType m_PurposeTag;
+    std::string m_DisplayName;
+    std::string m_SourceRole;
+    std::string m_DestinationRole;
+  };
+
+} // namespace mitk
+
+#endif
diff --git a/Modules/Core/src/DataManagement/mitkPropertyRelationRuleBase.cpp b/Modules/Core/src/DataManagement/mitkPropertyRelationRuleBase.cpp
index a3674cb0a1..7cb8e6b969 100644
--- a/Modules/Core/src/DataManagement/mitkPropertyRelationRuleBase.cpp
+++ b/Modules/Core/src/DataManagement/mitkPropertyRelationRuleBase.cpp
@@ -1,772 +1,762 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 All rights reserved.
 
 This software is distributed WITHOUT ANY WARRANTY; without
 even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.
 
 See LICENSE.txt or http://www.mitk.org for details.
 
 ===================================================================*/
 
 #include "mitkPropertyRelationRuleBase.h"
 
 #include <mitkDataNode.h>
 #include <mitkExceptionMacro.h>
 #include <mitkNodePredicateBase.h>
 #include <mitkStringProperty.h>
 #include <mitkUIDGenerator.h>
 
 #include <mutex>
 #include <regex>
 
 bool mitk::PropertyRelationRuleBase::IsAbstract() const
 {
   return true;
 };
 
 bool mitk::PropertyRelationRuleBase::IsSourceCandidate(const IPropertyProvider *owner) const
 {
   return owner != nullptr;
 };
 
 bool mitk::PropertyRelationRuleBase::IsDestinationCandidate(const IPropertyProvider *owner) const
 {
   return owner != nullptr;
 };
 
 mitk::PropertyKeyPath mitk::PropertyRelationRuleBase::GetRootKeyPath()
 {
   return PropertyKeyPath().AddElement("MITK").AddElement("Relations");
 };
 
 bool mitk::PropertyRelationRuleBase::IsSupportedRuleID(const RuleIDType& ruleID) const
 {
   return ruleID == this->GetRuleID();
 };
 
 
 std::string mitk::PropertyRelationRuleBase::GetRIIPropertyRegEx(const std::string propName, const InstanceIDType &instanceID) const
 {
   auto path = this->GetRootKeyPath();
   if (instanceID.empty())
   {
     path.AddAnyElement();
   }
   else
   {
     path.AddElement(instanceID);
   }
 
   if (!propName.empty())
   {
     path.AddElement(propName);
   }
 
   return PropertyKeyPathToPropertyRegEx(path);
 };
 
 //workaround until T24729 is done. Please remove if T24728 is done
 //then could directly use owner->GetPropertyKeys() again.
-auto GetPropertyKeys(const mitk::IPropertyProvider *owner)
+std::vector<std::string> mitk::PropertyRelationRuleBase::GetPropertyKeys(const mitk::IPropertyProvider *owner)
 {
   std::vector<std::string> keys;
   auto sourceCasted = dynamic_cast<const mitk::DataNode*>(owner);
   if (sourceCasted) {
     auto sourceData = sourceCasted->GetData();
     if (sourceData) {
       keys = sourceData->GetPropertyKeys();
     }
     else {
       keys = sourceCasted->GetPropertyKeys();
     }
   }
   else {
     keys = owner->GetPropertyKeys();
   }
   return keys;
 };
 //end workaround for T24729
 
 
 bool mitk::PropertyRelationRuleBase::IsSource(const IPropertyProvider *owner) const
 {
   if (!owner)
   {
     mitkThrow() << "Error. Passed owner pointer is NULL";
   }
 
   std::vector<std::string> keys;
   //workaround until T24729 is done. Please remove if T24728 is done
   keys = GetPropertyKeys(owner);
   //end workaround for T24729
 
   auto sourceRegExStr = this->GetRIIPropertyRegEx("ruleID");
   auto regEx = std::regex(sourceRegExStr);
 
   for (const auto &key : keys)
   {
     if (std::regex_match(key, regEx))
     {
       auto idProp = owner->GetConstProperty(key);
       auto ruleID = idProp->GetValueAsString();
       if (this->IsSupportedRuleID(ruleID))
       {
         return true;
       }
     }
   }
   
   return false;
 };
 
 mitk::PropertyRelationRuleBase::RelationType mitk::PropertyRelationRuleBase::HasRelation(
   const IPropertyProvider *source, const IPropertyProvider *destination) const
 {
   if (!source)
   {
     mitkThrow() << "Error. Passed source pointer is NULL";
   }
   if (!destination)
   {
     mitkThrow() << "Error. Passed owner pointer is NULL";
   }
 
   RelationType result = RelationType::None;
 
   if (!this->GetInstanceID_IDLayer(source, destination).empty())
   { // has relations of type Connected_ID;
     result = RelationType::Connected_ID;
   }
 
   if (result == RelationType::None)
   {
     auto instanceIDs_data = this->GetInstanceID_datalayer(source, destination);
 
     if (instanceIDs_data.size() > 1)
     {
       MITK_WARN << "Property relation on data level is ambiguous. First relation is used. Instance ID: "
                 << instanceIDs_data.front();
     }
 
     if (!instanceIDs_data.empty() && instanceIDs_data.front() != NULL_INSTANCE_ID())
     { // has relations of type Connected_Data;
       result = RelationType::Connected_Data;
     }
   }
 
   if (result == RelationType::None)
   {
     if (this->HasImplicitDataRelation(source, destination))
     { // has relations of type Connected_Data;
       result = RelationType::Implicit_Data;
     }
   }
 
   return result;
 };
 
 mitk::PropertyRelationRuleBase::RelationUIDVectorType mitk::PropertyRelationRuleBase::GetExistingRelations(
   const IPropertyProvider *source) const
 {
   if (!source)
   {
     mitkThrow() << "Error. Passed source pointer is NULL";
   }
 
   auto ruleIDRegExStr = this->GetRIIPropertyRegEx("ruleID");
   auto regEx = std::regex(ruleIDRegExStr);
 
   //workaround until T24729 is done. You can use directly source->GetPropertyKeys again, when fixed.
   const auto keys = GetPropertyKeys(source);
   //end workaround for T24729
 
   RelationUIDVectorType relationUIDs;
 
   for (const auto &key : keys)
   {
     if (std::regex_match(key, regEx))
     {
       auto idProp = source->GetConstProperty(key);
       auto ruleID = idProp->GetValueAsString();
       if (this->IsSupportedRuleID(ruleID))
       {
         auto instanceID = this->GetInstanceIDByPropertyName(key);
         relationUIDs.push_back(this->GetRelationUIDByInstanceID(source, instanceID));
       }
     }
   }
 
   return relationUIDs;
 };
 
 mitk::PropertyRelationRuleBase::RelationUIDVectorType mitk::PropertyRelationRuleBase::GetRelationUIDs(
   const IPropertyProvider *source, const IPropertyProvider *destination) const
 {
   if (!source)
   {
     mitkThrow() << "Error. Passed source pointer is NULL";
   }
   if (!destination)
   {
     mitkThrow() << "Error. Passed destination pointer is NULL";
   }
 
   RelationUIDVectorType result;
 
   auto instanceIDs = this->GetInstanceID_IDLayer(source, destination);
   for (const auto instanceID : instanceIDs)
   {
     result.push_back(this->GetRelationUIDByInstanceID(source, instanceID));
   }
 
   if (result.empty() || this->IsAbstract())
   {
     auto instanceIDs_data = this->GetInstanceID_datalayer(source, destination);
 
     for (const auto instanceID : instanceIDs_data)
     {
       if (std::find(std::begin(instanceIDs), std::end(instanceIDs), instanceID) == std::end(instanceIDs))
       {
         result.push_back(this->GetRelationUIDByInstanceID(source, instanceID));
       }
     }
   }
 
   return result;
 };
 
 mitk::PropertyRelationRuleBase::RelationUIDType
 mitk::PropertyRelationRuleBase::GetRelationUID(const IPropertyProvider *source, const IPropertyProvider *destination) const
 {
   auto result = this->GetRelationUIDs(source, destination);
 
   if (result.empty())
   {
     mitkThrowException(NoPropertyRelationException);
   }
   else if(result.size()>1)
   {
     mitkThrow() << "Cannot return one(!) relation UID. Multiple relations exists for given rule, source and destination.";
   }
 
   return result[0];
 };
 
 mitk::PropertyRelationRuleBase::InstanceIDType mitk::PropertyRelationRuleBase::NULL_INSTANCE_ID()
 {
   return std::string();
 };
 
 mitk::PropertyRelationRuleBase::RelationUIDType mitk::PropertyRelationRuleBase::GetRelationUIDByInstanceID(
   const IPropertyProvider *source, const InstanceIDType &instanceID) const
 {
   RelationUIDType result;
 
   if (instanceID != NULL_INSTANCE_ID())
   {
     auto idProp = source->GetConstProperty(
       PropertyKeyPathToPropertyName(this->GetRootKeyPath().AddElement(instanceID).AddElement("relationUID")));
 
     if (idProp.IsNotNull())
     {
       result = idProp->GetValueAsString();
     }
   }
 
   if (result.empty())
   {
     mitkThrowException(NoPropertyRelationException);
   }
 
   return result;
 };
 
 mitk::PropertyRelationRuleBase::InstanceIDType mitk::PropertyRelationRuleBase::GetInstanceIDByRelationUID(
   const IPropertyProvider *source, const RelationUIDType &relationUID) const
 {
   if (!source)
   {
     mitkThrow() << "Error. Passed source pointer is NULL";
   }
 
   InstanceIDType result = NULL_INSTANCE_ID();
 
   auto destRegExStr =
     PropertyKeyPathToPropertyRegEx(GetRootKeyPath().AddAnyElement().AddElement("relationUID"));
   auto regEx = std::regex(destRegExStr);
   std::smatch instance_matches;
 
   //workaround until T24729 is done. You can use directly source->GetPropertyKeys again, when fixed.
   const auto keys = GetPropertyKeys(source);
   //end workaround for T24729
 
   for (const auto &key : keys)
   {
     if (std::regex_search(key, instance_matches, regEx))
     {
       auto idProp = source->GetConstProperty(key);
       if (idProp->GetValueAsString() == relationUID)
       {
         if (instance_matches.size()>1)
         {
           result = instance_matches[1];
           break;
         }
       }
     }
   }
 
   return result;
 };
 
 mitk::PropertyRelationRuleBase::InstanceIDVectorType mitk::PropertyRelationRuleBase::GetInstanceID_IDLayer(
   const IPropertyProvider *source, const IPropertyProvider *destination) const
 {
   if (!source)
   {
     mitkThrow() << "Error. Passed source pointer is NULL";
   }
   if (!destination)
   {
     mitkThrow() << "Error. Passed destination pointer is NULL";
   }
 
   auto identifiable = dynamic_cast<const Identifiable *>(destination);
 
   if (!identifiable)
   { //This check and pass through to data is needed due to solve T25711. See Task for more information.
     //This could be removed at the point we can get rid of DataNodes or they get realy transparent.
     auto node = dynamic_cast<const DataNode*>(destination);
     if (node && node->GetData())
     {
       identifiable = dynamic_cast<const Identifiable *>(node->GetData());
     }
   }
 
   InstanceIDVectorType result;
 
   if (identifiable)
   { // check for relations of type Connected_ID;
 
     auto destRegExStr = this->GetRIIPropertyRegEx("destinationUID");
     auto regEx = std::regex(destRegExStr);
     std::smatch instance_matches;
 
     auto destUID = identifiable->GetUID();
 
     //workaround until T24729 is done. You can use directly source->GetPropertyKeys again, when fixed.
     const auto keys = GetPropertyKeys(source);
     //end workaround for T24729
 
     for (const auto &key : keys)
     {
       if (std::regex_search(key, instance_matches, regEx))
       {
         auto idProp = source->GetConstProperty(key);
         if (idProp->GetValueAsString() == destUID)
         {
           if (instance_matches.size()>1)
           {
             auto instanceID = instance_matches[1];
             if (this->IsSupportedRuleID(GetRuleIDByInstanceID(source, instanceID)))
             {
               result.push_back(instanceID);
             }
           }
         }
       }
     }
   }
 
   return result;
 };
 
 mitk::PropertyRelationRuleBase::RelationUIDType mitk::PropertyRelationRuleBase::Connect(IPropertyOwner *source, const IPropertyProvider *destination) const
 {
   if (!source)
   {
     mitkThrow() << "Error. Passed source pointer is NULL";
   }
   if (!destination)
   {
     mitkThrow() << "Error. Passed destination pointer is NULL";
   }
   if (this->IsAbstract())
   {
     mitkThrow() << "Error. This is an abstract property relation rule. Abstract rule must not make a connection. Please use a concrete rule.";
   }
 
   auto instanceIDs = this->GetInstanceID_IDLayer(source, destination);
   bool hasIDlayer = !instanceIDs.empty();
 
   auto instanceIDs_data = this->GetInstanceID_datalayer(source, destination);
   if (instanceIDs_data.size() > 1)
   {
     MITK_WARN << "Property relation on data level is ambiguous. First relation is used. Instance ID: "
               << instanceIDs_data.front();
   }
   bool hasDatalayer = !instanceIDs_data.empty();
 
   if (hasIDlayer && hasDatalayer && instanceIDs.front() != instanceIDs_data.front())
   {
     mitkThrow() << "Property relation information is in an invalid state. ID and data layer point to different "
                    "relation instances. Rule: "
                 << this->GetRuleID() << "; ID based instance: " << instanceIDs.front()
                 << "; Data base instance: " << instanceIDs_data.front();
   }
 
   RelationUIDType relationUID = this->CreateRelationUID();
 
   InstanceIDType instanceID = "";
 
   if (hasIDlayer)
   {
     instanceID = instanceIDs.front();
   }
   else if (hasDatalayer)
   {
     instanceID = instanceIDs_data.front();
   }
   else
   {
     instanceID = this->CreateNewRelationInstance(source, relationUID);
   }
 
   auto relUIDKey =
     PropertyKeyPathToPropertyName(GetRootKeyPath().AddElement(instanceID).AddElement("relationUID"));
   source->SetProperty(relUIDKey, mitk::StringProperty::New(relationUID));
 
   auto ruleIDKey =
     PropertyKeyPathToPropertyName(GetRootKeyPath().AddElement(instanceID).AddElement("ruleID"));
   source->SetProperty(ruleIDKey, mitk::StringProperty::New(this->GetRuleID()));
 
   if (!hasIDlayer)
   {
     auto identifiable = dynamic_cast<const Identifiable *>(destination);
 
     if (!identifiable)
     { //This check and pass through to data is needed due to solve T25711. See Task for more information.
       //This could be removed at the point we can get rid of DataNodes or they get realy transparent.
       auto node = dynamic_cast<const DataNode*>(destination);
       if (node && node->GetData())
       {
         identifiable = dynamic_cast<const Identifiable *>(node->GetData());
       }
     }
 
     if (identifiable)
     {
       auto destUIDKey =
         PropertyKeyPathToPropertyName(GetRootKeyPath().AddElement(instanceID).AddElement("destinationUID"));
       source->SetProperty(destUIDKey, mitk::StringProperty::New(identifiable->GetUID()));
     }
   }
 
   if (!hasDatalayer)
   {
     this->Connect_datalayer(source, destination, instanceID);
   }
 
   return relationUID;
 };
 
 void mitk::PropertyRelationRuleBase::Disconnect(IPropertyOwner *source, const IPropertyProvider *destination) const
 {
   try
   {
     const auto relationUIDs = this->GetRelationUIDs(source, destination);
     for (const auto relUID: relationUIDs)
     {
       this->Disconnect(source, relUID);
     }
   }
   catch (const NoPropertyRelationException &)
   {
     // nothing to do and no real error in context of disconnect.
   }
 };
 
 void mitk::PropertyRelationRuleBase::Disconnect(IPropertyOwner *source, RelationUIDType relationUID) const
 {
   auto instanceID = this->GetInstanceIDByRelationUID(source, relationUID);
 
   if (instanceID != NULL_INSTANCE_ID())
   {
     this->Disconnect_datalayer(source, instanceID);
 
     auto instancePrefix = PropertyKeyPathToPropertyName(GetRootKeyPath().AddElement(instanceID));
 
     //workaround until T24729 is done. You can use directly source->GetPropertyKeys again, when fixed.
     const auto keys = GetPropertyKeys(source);
     //end workaround for T24729
 
 
     for (const auto &key : keys)
     {
       if (key.find(instancePrefix) == 0)
       {
         source->RemoveProperty(key);
       }
     }
   }
 };
 
 mitk::PropertyRelationRuleBase::RelationUIDType mitk::PropertyRelationRuleBase::CreateRelationUID()
 {
   UIDGenerator generator;
   return generator.GetUID();
 };
 
 /**This mutex is used to guard mitk::PropertyRelationRuleBase::CreateNewRelationInstance by a class wide mutex to avoid
   racing conditions in a scenario where rules are used concurrently. It is not in the class interface itself, because it
   is an implementation detail.
 */
 std::mutex relationCreationLock;
 
 mitk::PropertyRelationRuleBase::InstanceIDType mitk::PropertyRelationRuleBase::CreateNewRelationInstance(
   IPropertyOwner *source, const RelationUIDType &relationUID) const
 {
   std::lock_guard<std::mutex> guard(relationCreationLock);
 
   //////////////////////////////////////
   // Get all existing instanc IDs
 
   std::vector<int> instanceIDs;
   InstanceIDType newID = "1";
 
   auto destRegExStr =
     PropertyKeyPathToPropertyRegEx(this->GetRootKeyPath().AddAnyElement().AddElement("relationUID"));
   auto regEx = std::regex(destRegExStr);
   std::smatch instance_matches;
 
   //workaround until T24729 is done. You can use directly source->GetPropertyKeys again, when fixed.
   const auto keys = GetPropertyKeys(source);
   //end workaround for T24729
 
 
   for (const auto &key : keys)
   {
     if (std::regex_search(key, instance_matches, regEx))
     {
       if (instance_matches.size()>1)
       {
         instanceIDs.push_back(std::stoi(instance_matches[1]));
       }
     }
   }
 
   //////////////////////////////////////
   // Get new ID
 
   std::sort(instanceIDs.begin(), instanceIDs.end());
   if (!instanceIDs.empty())
   {
     newID = std::to_string(instanceIDs.back() + 1);
   }
 
   //////////////////////////////////////
   // reserve new ID
   auto relUIDKey =
     PropertyKeyPathToPropertyName(this->GetRootKeyPath().AddElement(newID).AddElement("relationUID"));
   source->SetProperty(relUIDKey, mitk::StringProperty::New(relationUID));
 
   return newID;
 };
 
 itk::LightObject::Pointer mitk::PropertyRelationRuleBase::InternalClone() const
 {
   return Superclass::InternalClone();
 };
 
 
 mitk::PropertyRelationRuleBase::InstanceIDType mitk::PropertyRelationRuleBase::GetInstanceIDByPropertyName(const std::string propName)
 {
   auto proppath = PropertyNameToPropertyKeyPath(propName);
   auto ref = GetRootKeyPath();
 
   if (proppath.GetSize() < 3 || !(proppath.GetFirstNode() == ref.GetFirstNode()) || !(proppath.GetNode(1) == ref.GetNode(1)))
   {
     mitkThrow() << "Property name is not for a RII property or containes no instance ID. Wrong name: " << propName;
   }
 
   return proppath.GetNode(2).name;
 };
 
 mitk::PropertyRelationRuleBase::RuleIDType mitk::PropertyRelationRuleBase::GetRuleIDByInstanceID(const IPropertyProvider *source,
   const InstanceIDType &instanceID) const
 {
   if (!source)
   {
     mitkThrow() << "Error. Source is invalid. Cannot deduce rule ID";
   }
 
-  auto regExStr = this->GetRIIPropertyRegEx("ruleID", instanceID);
+  auto path = GetRootKeyPath().AddElement(instanceID).AddElement("ruleID");
+  auto name = PropertyKeyPathToPropertyName(path);
 
-  auto regEx = std::regex(regExStr);
-
-  //workaround until T24729 is done. You can use directly source->GetPropertyKeys again, when fixed.
-  const auto keys = GetPropertyKeys(source);
-  //end workaround for T24729
-
-  RelationUIDVectorType relationUIDs;
+  const auto prop = source->GetConstProperty(name);
 
   std::string result;
 
-  for (const auto &key : keys)
-  {
-    if (std::regex_match(key, regEx))
-    {
-      auto idProp = source->GetConstProperty(key);
-      result = idProp->GetValueAsString();
-      break;
-    }
-  }
+ if (prop.IsNotNull())
+ {
+   result = prop->GetValueAsString();
+ }
 
   if (result.empty())
   {
     mitkThrowException(NoPropertyRelationException) << "Error. Source has no property relation with the passed instance ID. Instance ID: " << instanceID;
   }
 
   return result;
 };
 
 namespace mitk
 {
   /**
   * \brief Predicate used to wrap rule checks.
   *
   * \ingroup DataStorage
   */
   class NodePredicateRuleFunction : public NodePredicateBase
   {
   public:
     using FunctionType = std::function<bool(const mitk::IPropertyProvider *, const mitk::PropertyRelationRuleBase *)>;
 
     mitkClassMacro(NodePredicateRuleFunction, NodePredicateBase)
       mitkNewMacro2Param(NodePredicateRuleFunction, const FunctionType &, PropertyRelationRuleBase::ConstPointer)
 
     ~NodePredicateRuleFunction() override = default;
 
     bool CheckNode(const mitk::DataNode *node) const override 
     {
       if (!node)
       {
         return false;
       }
 
       return m_Function(node, m_Rule);
     };
 
   protected:
     explicit NodePredicateRuleFunction(const FunctionType &function, PropertyRelationRuleBase::ConstPointer rule) : m_Function(function), m_Rule(rule)
     {
     };
 
     FunctionType m_Function;
     PropertyRelationRuleBase::ConstPointer m_Rule;
   };
 
 } // namespace mitk
 
 mitk::NodePredicateBase::ConstPointer mitk::PropertyRelationRuleBase::GetSourceCandidateIndicator() const
 {
   auto check = [](const mitk::IPropertyProvider *node, const mitk::PropertyRelationRuleBase *rule) {
     return rule->IsSourceCandidate(node);
   };
 
   return NodePredicateRuleFunction::New(check, this).GetPointer();
 };
 
 mitk::NodePredicateBase::ConstPointer mitk::PropertyRelationRuleBase::GetDestinationCandidateIndicator() const
 {
   auto check = [](const mitk::IPropertyProvider *node, const mitk::PropertyRelationRuleBase *rule) {
     return rule->IsDestinationCandidate(node);
   };
 
   return NodePredicateRuleFunction::New(check, this).GetPointer();
 };
 
 mitk::NodePredicateBase::ConstPointer mitk::PropertyRelationRuleBase::GetConnectedSourcesDetector() const
 {
   auto check = [](const mitk::IPropertyProvider *node, const mitk::PropertyRelationRuleBase *rule)
   {
     return rule->IsSource(node);
   };
 
   return NodePredicateRuleFunction::New(check, this).GetPointer();
 };
 
 mitk::NodePredicateBase::ConstPointer mitk::PropertyRelationRuleBase::GetSourcesDetector(
   const IPropertyProvider *destination, RelationType minimalRelation) const
 {
   if (!destination)
   {
     mitkThrow() << "Error. Passed destination pointer is NULL";
   }
 
   auto check = [destination, minimalRelation](const mitk::IPropertyProvider *node,
                                               const mitk::PropertyRelationRuleBase *rule) {
     return rule->HasRelation(node, destination) >= minimalRelation;
   };
 
   return NodePredicateRuleFunction::New(check, this).GetPointer();
 };
 
 mitk::NodePredicateBase::ConstPointer mitk::PropertyRelationRuleBase::GetDestinationsDetector(
   const IPropertyProvider *source, RelationType minimalRelation) const
 {
   if (!source)
   {
     mitkThrow() << "Error. Passed source pointer is NULL";
   }
 
   auto check = [source, minimalRelation](const mitk::IPropertyProvider *node,
                                          const mitk::PropertyRelationRuleBase *rule) {
     return rule->HasRelation(source, node) >= minimalRelation;
   };
 
   return NodePredicateRuleFunction::New(check, this).GetPointer();
 };
 
 mitk::NodePredicateBase::ConstPointer mitk::PropertyRelationRuleBase::GetDestinationDetector(
   const IPropertyProvider *source, RelationUIDType relationUID) const
 {
   if (!source)
   {
     mitkThrow() << "Error. Passed source pointer is NULL";
   }
 
   auto relUIDs = this->GetExistingRelations(source);
   if (std::find(relUIDs.begin(), relUIDs.end(), relationUID) == relUIDs.end())
   {
     mitkThrow()
       << "Error. Passed relationUID does not identify a relation instance of the passed source for this rule instance.";
   };
 
   auto check = [source, relationUID](const mitk::IPropertyProvider *node, const mitk::PropertyRelationRuleBase *rule) {
     try
     {
       auto relevantUIDs = rule->GetRelationUIDs(source, node);
       for (const auto& aUID : relevantUIDs)
       {
         if (aUID == relationUID)
         {
           return true;
         }
       }
     }
     catch(const NoPropertyRelationException &)
     {
       return false;
     }
     return false;
   };
 
   return NodePredicateRuleFunction::New(check, this).GetPointer();
 };
diff --git a/Modules/Core/src/DataManagement/mitkSourceImageRelationRule.cpp b/Modules/Core/src/DataManagement/mitkSourceImageRelationRule.cpp
new file mode 100644
index 0000000000..6bc57462bc
--- /dev/null
+++ b/Modules/Core/src/DataManagement/mitkSourceImageRelationRule.cpp
@@ -0,0 +1,380 @@
+/*===================================================================
+
+The Medical Imaging Interaction Toolkit (MITK)
+
+Copyright (c) German Cancer Research Center,
+Division of Medical and Biological Informatics.
+All rights reserved.
+
+This software is distributed WITHOUT ANY WARRANTY; without
+even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.
+
+See LICENSE.txt or http://www.mitk.org for details.
+
+===================================================================*/
+
+#include <regex>
+#include <mutex>
+
+#include "mitkSourceImageRelationRule.h"
+#include "mitkPropertyNameHelper.h"
+#include "mitkStringProperty.h"
+#include "mitkTemporoSpatialStringProperty.h"
+#include "mitkDataNode.h"
+
+
+bool mitk::SourceImageRelationRule::IsAbstract() const
+{
+  return m_PurposeTag.empty();
+};
+
+bool mitk::SourceImageRelationRule::IsSupportedRuleID(const RuleIDType& ruleID) const
+{
+  return ruleID == this->GetRuleID() || (IsAbstract() && ruleID.find("SourceImageRelation ") == 0);
+};
+
+mitk::SourceImageRelationRule::RuleIDType mitk::SourceImageRelationRule::GetRuleID() const
+{
+  return "SourceImageRelation " + m_PurposeTag;
+};
+
+std::string mitk::SourceImageRelationRule::GetDisplayName() const
+{
+  return m_DisplayName;
+};
+
+std::string mitk::SourceImageRelationRule::GetSourceRoleName() const
+{
+  return m_SourceRole;
+};
+
+std::string mitk::SourceImageRelationRule::GetDestinationRoleName() const
+{
+  return m_DestinationRole;
+};
+
+bool mitk::SourceImageRelationRule::IsDestinationCandidate(const IPropertyProvider *owner) const
+{
+  auto node = dynamic_cast<const DataNode*>(owner);
+
+  auto image = nullptr != node
+    ? dynamic_cast<const Image*>(node->GetData())
+    : dynamic_cast<const Image*>(owner);
+
+  return image != nullptr;
+}
+
+mitk::SourceImageRelationRule::RelationUIDType mitk::SourceImageRelationRule::Connect(Image *source, const Image *destination) const
+{
+  return Superclass::Connect(source, destination);
+};
+
+mitk::SourceImageRelationRule::SourceImageRelationRule()
+  : m_PurposeTag(""), m_DisplayName("Abstract image to image relation"), m_SourceRole("derived data"), m_DestinationRole("source image")
+{};
+
+mitk::SourceImageRelationRule::SourceImageRelationRule(const RuleIDType &purposeTag)
+  : SourceImageRelationRule(purposeTag, purposeTag + " relation"){};
+
+mitk::SourceImageRelationRule::SourceImageRelationRule(const RuleIDType &purposeTag, const std::string &displayName)
+  : SourceImageRelationRule(
+      purposeTag, displayName, "derived data", "source image"){};
+
+mitk::SourceImageRelationRule::SourceImageRelationRule(const RuleIDType &purposeTag,
+                                                   const std::string &displayName,
+                                                   const std::string &sourceRole,
+                                                   const std::string &destinationRole)
+  : m_PurposeTag(purposeTag), m_DisplayName(displayName), m_SourceRole(sourceRole), m_DestinationRole(destinationRole){};
+
+mitk::SourceImageRelationRule::InstanceIDVectorType mitk::SourceImageRelationRule::GetInstanceID_datalayer(
+  const IPropertyProvider * source, const IPropertyProvider * destination) const
+{
+  InstanceIDVectorType result;
+
+  auto relevantReferenceIndices = GetReferenceSequenceIndices(source, destination);
+
+  auto itemRegExStr = this->GetRIIPropertyRegEx("SourceImageSequenceItem");
+  auto regEx = std::regex(itemRegExStr);
+
+  //workaround until T24729 is done. Please remove if T24728 is done
+  auto keys = PropertyRelationRuleBase::GetPropertyKeys(source);
+  //end workaround for T24729
+
+  for (const auto &key : keys)
+  {
+    if (std::regex_match(key, regEx))
+    {
+      auto sequItemProp = source->GetConstProperty(key);
+      if (sequItemProp.IsNotNull())
+      {
+        auto finding = std::find(std::cbegin(relevantReferenceIndices), std::cend(relevantReferenceIndices), sequItemProp->GetValueAsString());
+        if (finding != std::cend(relevantReferenceIndices))
+        {
+          auto instanceID = GetInstanceIDByPropertyName(key);
+          auto ruleID = GetRuleIDByInstanceID(source, instanceID);
+          if (this->IsSupportedRuleID(ruleID))
+          {
+            result.push_back(instanceID);
+          }
+        }
+      }
+    }
+  }
+
+  return result;
+};
+
+std::vector<std::string> mitk::SourceImageRelationRule::GetReferenceSequenceIndices(const IPropertyProvider * source,
+  const IPropertyProvider * destination) const
+{
+  std::vector<std::string> result;
+
+  BaseProperty::ConstPointer destInstanceUIDProp;
+
+  if (destination)
+  {
+    destInstanceUIDProp = destination->GetConstProperty(GeneratePropertyNameForDICOMTag(0x0008, 0x0018));
+
+    if (destInstanceUIDProp.IsNull())
+    {
+      return result;
+    }
+  }
+
+  PropertyKeyPath referencedInstanceUIDs;
+  referencedInstanceUIDs.AddElement("DICOM").AddElement("0008").AddAnySelection("2112").AddElement("0008").AddElement("1155");
+
+  auto sourceRegExStr = PropertyKeyPathToPropertyRegEx(referencedInstanceUIDs);;
+  auto regEx = std::regex(sourceRegExStr);
+
+  std::vector<std::string> keys;
+  //workaround until T24729 is done. Please remove if T24728 is done
+  keys = PropertyRelationRuleBase::GetPropertyKeys(source);
+  //end workaround for T24729
+
+  for (const auto &key : keys)
+  {
+    if (std::regex_match(key, regEx))
+    {
+      auto refUIDProp = source->GetConstProperty(key);
+      if (destination==nullptr || *refUIDProp == *destInstanceUIDProp)
+      {
+        auto currentKeyPath = PropertyNameToPropertyKeyPath(key);
+        auto currentKeyPathSelection = currentKeyPath.GetNode(2).selection;
+        PropertyKeyPath purposePath;
+        purposePath.AddElement("DICOM").AddElement("0008").AddSelection("2112", currentKeyPathSelection).AddElement("0040").AddSelection("a170", 0).AddElement("0008").AddElement("0104");
+
+        auto purposeProp = source->GetConstProperty(PropertyKeyPathToPropertyName(purposePath));
+        if (this->IsAbstract() || (purposeProp.IsNotNull() && purposeProp->GetValueAsString() == this->m_PurposeTag))
+        {
+          result.push_back(std::to_string(currentKeyPathSelection));
+        }
+      }
+    }
+  }
+
+  return result;
+};
+
+bool mitk::SourceImageRelationRule::HasImplicitDataRelation(const IPropertyProvider * source,
+                                                          const IPropertyProvider * destination) const
+{
+  auto relevantReferences = GetReferenceSequenceIndices(source, destination);
+
+  if (this->IsAbstract())
+  {
+    return !relevantReferences.empty();
+  }
+  else
+  {
+    for (auto referenceIndex : relevantReferences)
+    {
+      PropertyKeyPath purposePath;
+      purposePath.AddElement("DICOM").AddElement("0008").AddSelection("2112", std::stoi(referenceIndex)).AddElement("0040").AddSelection("a170", 0).AddElement("0008").AddElement("0104");
+      auto purposeProp = source->GetConstProperty(PropertyKeyPathToPropertyName(purposePath));
+
+      if (purposeProp.IsNotNull() && purposeProp->GetValueAsString() == this->m_PurposeTag)
+      {
+        return true;
+      }
+    }
+  }
+  
+  return false;
+};
+
+
+/**This mutex is used to guard mitk::SourceImageRelationRule::CreateNewSourceImageSequenceItem by a class wide mutex to avoid
+racing conditions in a scenario where rules are used concurrently. It is not in the class interface itself, because it
+is an implementation detail.
+*/
+namespace 
+{
+  std::mutex sequenceItemCreationLock;
+}
+
+mitk::PropertyKeyPath::ItemSelectionIndex mitk::SourceImageRelationRule::CreateNewSourceImageSequenceItem(
+  IPropertyOwner *source) const
+{
+  std::lock_guard<std::mutex> guard(sequenceItemCreationLock);
+
+  //////////////////////////////////////
+  // Get all existing sequence items
+
+  std::vector<PropertyKeyPath::ItemSelectionIndex> instanceIDs;
+  PropertyKeyPath::ItemSelectionIndex newID = 0;
+
+  PropertyKeyPath referencedInstanceUIDs;
+  referencedInstanceUIDs.AddElement("DICOM").AddElement("0008").AddAnySelection("2112").AddElement("0008").AddElement("1155");
+  auto regExStr = PropertyKeyPathToPropertyRegEx(referencedInstanceUIDs);
+  auto regEx = std::regex(regExStr);
+  std::smatch instance_matches;
+
+  //workaround until T24729 is done. You can use directly source->GetPropertyKeys again, when fixed.
+  const auto keys = GetPropertyKeys(source);
+  //end workaround for T24729
+
+  for (const auto &key : keys)
+  {
+    if (std::regex_search(key, instance_matches, regEx))
+    {
+      if (instance_matches.size()>1)
+      {
+        instanceIDs.push_back(std::stoi(instance_matches[1]));
+      }
+    }
+  }
+
+  //////////////////////////////////////
+  // Get new ID
+
+  std::sort(instanceIDs.begin(), instanceIDs.end());
+  if (!instanceIDs.empty())
+  {
+    newID = instanceIDs.back()+1;
+  }
+
+  //////////////////////////////////////
+  // reserve new ID
+
+  PropertyKeyPath newSourceImageSequencePath;
+  newSourceImageSequencePath.AddElement("DICOM").AddElement("0008").AddSelection("2112",newID).AddElement("0008").AddElement("1155");
+
+  auto newKey =
+    PropertyKeyPathToPropertyName(newSourceImageSequencePath);
+  source->SetProperty(newKey, mitk::TemporoSpatialStringProperty::New("reserved slot for source image sequence"));
+
+  return newID;
+};
+
+
+void mitk::SourceImageRelationRule::Connect_datalayer(IPropertyOwner * source,
+                                                    const IPropertyProvider * destination,
+                                                    const InstanceIDType & instanceID) const
+{
+  auto destInstanceUIDProp = destination->GetConstProperty(GeneratePropertyNameForDICOMTag(0x0008,0x0018));
+  auto destClassUIDProp = destination->GetConstProperty(GeneratePropertyNameForDICOMTag(0x0008, 0x0016));
+
+  if (destInstanceUIDProp.IsNotNull() && destClassUIDProp.IsNotNull())
+  {
+    auto existingRefs = this->GetReferenceSequenceIndices(source, destination);
+    std::string  newSelectionIndexStr;
+    if (!existingRefs.empty())
+    {
+      newSelectionIndexStr = existingRefs[0];
+    }
+    else
+    {
+      PropertyKeyPath::ItemSelectionIndex newSelectionIndex = CreateNewSourceImageSequenceItem(source);
+
+      PropertyKeyPath refInstanceUIDPath;
+      refInstanceUIDPath.AddElement("DICOM").AddElement("0008").AddSelection("2112", newSelectionIndex).AddElement("0008").AddElement("1155");
+      source->SetProperty(PropertyKeyPathToPropertyName(refInstanceUIDPath), destInstanceUIDProp->Clone());
+
+      PropertyKeyPath refClassUIDPath;
+      refClassUIDPath.AddElement("DICOM").AddElement("0008").AddSelection("2112", newSelectionIndex).AddElement("0008").AddElement("1150");
+      source->SetProperty(PropertyKeyPathToPropertyName(refClassUIDPath), destClassUIDProp->Clone());
+
+      PropertyKeyPath purposePath;
+      purposePath.AddElement("DICOM").AddElement("0008").AddSelection("2112", newSelectionIndex).AddElement("0040").AddSelection("a170", 0).AddElement("0008").AddElement("0104");
+      source->SetProperty(PropertyKeyPathToPropertyName(purposePath), StringProperty::New(m_PurposeTag));
+
+      newSelectionIndexStr = std::to_string(newSelectionIndex);
+    }
+
+    auto sourceImageRefPath = GetRootKeyPath().AddElement(instanceID).AddElement("SourceImageSequenceItem");
+    source->SetProperty(PropertyKeyPathToPropertyName(sourceImageRefPath), StringProperty::New(newSelectionIndexStr).GetPointer());
+  }
+  else
+  {
+    MITK_DEBUG << "Cannot connect SourceImageRelationRule on data layer. Passed destination does not have properties for DICOM SOP Instance UIDs(0x0008, 0x0018) and DICOM SOP Class UID(0x0008, 0x0016)";
+  }
+};
+
+void mitk::SourceImageRelationRule::Disconnect_datalayer(IPropertyOwner * source, const InstanceIDType & instanceID) const
+{
+  auto sourceImageRefPath = GetRootKeyPath().AddElement(instanceID).AddElement("SourceImageSequenceItem");
+  auto imageRefProp = source->GetConstProperty(PropertyKeyPathToPropertyName(sourceImageRefPath));
+
+  if (imageRefProp.IsNotNull())
+  {
+    auto deletedImageRefSequenceIndex = imageRefProp->GetValueAsString();
+
+    auto refs = GetReferenceSequenceIndices(source);
+    std::sort(refs.begin(), refs.end());
+
+    for (auto refIndexStr : refs)
+    {
+      auto refIndex = std::stoi(refIndexStr);
+
+      if (refIndex >= std::stoi(deletedImageRefSequenceIndex))
+      {
+        PropertyKeyPath refDICOMDataPath;
+        refDICOMDataPath.AddElement("DICOM").AddElement("0008").AddSelection("2112", refIndex);
+        auto prefix = PropertyKeyPathToPropertyName(refDICOMDataPath);
+
+        PropertyKeyPath refRelDataPath = GetRootKeyPath().AddAnyElement().AddElement("SourceImageSequenceItem");;
+        auto regEx = std::regex(PropertyKeyPathToPropertyRegEx(refRelDataPath));
+
+        //workaround until T24729 is done. You can use directly source->GetPropertyKeys again, when fixed.
+        const auto keys = GetPropertyKeys(source);
+        //end workaround for T24729
+
+        for (const auto &key : keys)
+        {
+          if (key.find(prefix) == 0)
+          { //its a relevant DICOM property delete or update
+            if (refIndexStr != deletedImageRefSequenceIndex)
+            {
+              //reindex to close the gap in the dicom sequence.
+              auto newPath = PropertyNameToPropertyKeyPath(key);
+              newPath.GetNode(2).selection = refIndex - 1;
+              source->SetProperty(PropertyKeyPathToPropertyName(newPath), source->GetNonConstProperty(key));
+            }
+            //remove old/outdated data layer information
+            source->RemoveProperty(key);
+
+            auto sourceImageRefPath = GetRootKeyPath().AddElement(instanceID).AddElement("SourceImageSequenceItem");
+          }
+          if (std::regex_match(key, regEx))
+          {  
+            auto imageSequenceItemProp = source->GetConstProperty(key);
+            if (imageSequenceItemProp->GetValueAsString() == std::to_string(refIndex))
+            {
+              //its a relevant data property of the relation rule.
+              source->SetProperty(key, StringProperty::New(std::to_string(refIndex - 1)));
+            }
+          }
+        }
+      }
+    }
+  }
+};
+
+itk::LightObject::Pointer mitk::SourceImageRelationRule::InternalClone() const
+{
+  itk::LightObject::Pointer result = Self::New(this->m_PurposeTag, this->m_DisplayName, this->m_SourceRole, this->m_DestinationRole).GetPointer();
+
+  return result;
+};
diff --git a/Modules/Core/test/files.cmake b/Modules/Core/test/files.cmake
index 0b6664b2a2..3c8a6f19dc 100644
--- a/Modules/Core/test/files.cmake
+++ b/Modules/Core/test/files.cmake
@@ -1,200 +1,201 @@
 # tests with no extra command line parameter
 set(MODULE_TESTS
   # IMPORTANT: If you plan to deactivate / comment out a test please write a bug number to the commented out line of code.
   #
   #     Example: #mitkMyTest #this test is commented out because of bug 12345
   #
   # It is important that the bug is open and that the test will be activated again before the bug is closed. This assures that
   # no test is forgotten after it was commented out. If there is no bug for your current problem, please add a new one and
   # mark it as critical.
 
   ################## DISABLED TESTS #################################################
   #mitkAbstractTransformGeometryTest.cpp #seems as tested class mitkExternAbstractTransformGeometry doesnt exist any more
   #mitkStateMachineContainerTest.cpp #rewrite test, indirect since no longer exported Bug 14529
   #mitkRegistrationBaseTest.cpp #tested class  mitkRegistrationBase doesn't exist any more
   #mitkSegmentationInterpolationTest.cpp #file doesn't exist!
   #mitkPipelineSmartPointerCorrectnessTest.cpp #file doesn't exist!
   #mitkITKThreadingTest.cpp #test outdated because itk::Semaphore was removed from ITK
   #mitkAbstractTransformPlaneGeometryTest.cpp #mitkVtkAbstractTransformPlaneGeometry doesn't exist any more
   #mitkTestUtilSharedLibrary.cpp #Linker problem with this test...
   #mitkTextOverlay2DSymbolsRenderingTest.cpp #Implementation of the tested feature is not finished yet. Ask Christoph or see bug 15104 for details.
 
   ################# RUNNING TESTS ###################################################
   mitkAccessByItkTest.cpp
   mitkCoreObjectFactoryTest.cpp
   mitkDataNodeTest.cpp
   mitkMaterialTest.cpp
   mitkActionTest.cpp
   mitkDispatcherTest.cpp
   mitkEnumerationPropertyTest.cpp
   mitkFileReaderRegistryTest.cpp
   #mitkFileWriterRegistryTest.cpp
   mitkFloatToStringTest.cpp
   mitkGenericPropertyTest.cpp
   mitkGeometry3DTest.cpp
   mitkGeometry3DEqualTest.cpp
   mitkGeometryDataIOTest.cpp
   mitkGeometryDataToSurfaceFilterTest.cpp
   mitkImageCastTest.cpp
   mitkImageEqualTest.cpp
   mitkImageDataItemTest.cpp
   mitkImageGeneratorTest.cpp
   mitkIOUtilTest.cpp
   mitkBaseDataTest.cpp
   mitkImportItkImageTest.cpp
   mitkGrabItkImageMemoryTest.cpp
   mitkInstantiateAccessFunctionTest.cpp
   mitkLevelWindowTest.cpp
   mitkMessageTest.cpp
   mitkPixelTypeTest.cpp
   mitkPlaneGeometryTest.cpp
   mitkPointSetTest.cpp
   mitkPointSetEqualTest.cpp
   mitkPointSetFileIOTest.cpp
   mitkPointSetOnEmptyTest.cpp
   mitkPointSetLocaleTest.cpp
   mitkPointSetWriterTest.cpp
   mitkPointSetReaderTest.cpp
   mitkPointSetPointOperationsTest.cpp
   mitkProgressBarTest.cpp
   mitkPropertyTest.cpp
   mitkPropertyListTest.cpp
   mitkPropertyPersistenceTest.cpp
   mitkPropertyPersistenceInfoTest.cpp
   mitkPropertyRelationRuleBaseTest.cpp
   mitkPropertyRelationsTest.cpp
   mitkSlicedGeometry3DTest.cpp
   mitkSliceNavigationControllerTest.cpp
   mitkSurfaceTest.cpp
   mitkSurfaceEqualTest.cpp
   mitkSurfaceToSurfaceFilterTest.cpp
   mitkTimeGeometryTest.cpp
   mitkProportionalTimeGeometryTest.cpp
   mitkUndoControllerTest.cpp
   mitkVtkWidgetRenderingTest.cpp
   mitkVerboseLimitedLinearUndoTest.cpp
   mitkWeakPointerTest.cpp
   mitkTransferFunctionTest.cpp
   mitkStepperTest.cpp
   mitkRenderingManagerTest.cpp
   mitkCompositePixelValueToStringTest.cpp
   vtkMitkThickSlicesFilterTest.cpp
   mitkNodePredicateSourceTest.cpp
   mitkNodePredicateDataPropertyTest.cpp
   mitkNodePredicateFunctionTest.cpp
   mitkVectorTest.cpp
   mitkClippedSurfaceBoundsCalculatorTest.cpp
   mitkExceptionTest.cpp
   mitkExtractSliceFilterTest.cpp
   mitkLogTest.cpp
   mitkImageDimensionConverterTest.cpp
   mitkLoggingAdapterTest.cpp
   mitkUIDGeneratorTest.cpp
   mitkPlanePositionManagerTest.cpp
   mitkAffineTransformBaseTest.cpp
   mitkPropertyAliasesTest.cpp
   mitkPropertyDescriptionsTest.cpp
   mitkPropertyExtensionsTest.cpp
   mitkPropertyFiltersTest.cpp
   mitkPropertyKeyPathTest.cpp
   mitkTinyXMLTest.cpp
   mitkRawImageFileReaderTest.cpp
   mitkInteractionEventTest.cpp
   mitkLookupTableTest.cpp
   mitkSTLFileReaderTest.cpp
   mitkPointTypeConversionTest.cpp
   mitkVectorTypeConversionTest.cpp
   mitkMatrixTypeConversionTest.cpp
   mitkArrayTypeConversionTest.cpp
   mitkSurfaceToImageFilterTest.cpp
   mitkBaseGeometryTest.cpp
   mitkImageToSurfaceFilterTest.cpp
   mitkEqualTest.cpp
   mitkLineTest.cpp
   mitkArbitraryTimeGeometryTest
   mitkItkImageIOTest.cpp
   mitkRotatedSlice4DTest.cpp
   mitkLevelWindowManagerCppUnitTest.cpp
   mitkVectorPropertyTest.cpp
   mitkTemporoSpatialStringPropertyTest.cpp
   mitkPropertyNameHelperTest.cpp
   mitkNodePredicateGeometryTest.cpp
   mitkPreferenceListReaderOptionsFunctorTest.cpp
   mitkGenericIDRelationRuleTest.cpp
+  mitkSourceImageRelationRuleTest.cpp
 )
 
 if(MITK_ENABLE_RENDERING_TESTING)
 set(MODULE_TESTS
   ${MODULE_TESTS}
   mitkPlaneGeometryDataMapper2DTest.cpp
   mitkPointSetDataInteractorTest.cpp #since mitkInteractionTestHelper is currently creating a vtkRenderWindow
   mitkSurfaceVtkMapper2DTest.cpp #new rendering test in CppUnit style
   mitkSurfaceVtkMapper2D3DTest.cpp # comparisons/consistency 2D/3D
 )
 endif()
 
 
 
 # test with image filename as an extra command line parameter
 set(MODULE_IMAGE_TESTS
   mitkImageTimeSelectorTest.cpp #only runs on images
   mitkImageAccessorTest.cpp #only runs on images
 )
 
 set(MODULE_SURFACE_TESTS
   mitkSurfaceVtkWriterTest.cpp #only runs on surfaces
 )
 
 # list of images for which the tests are run
 set(MODULE_TESTIMAGE
   US4DCyl.nrrd
   Pic3D.nrrd
   Pic2DplusT.nrrd
   BallBinary30x30x30.nrrd
   Png2D-bw.png
 )
 set(MODULE_TESTSURFACE
   binary.stl
   ball.stl
 )
 
 set(MODULE_CUSTOM_TESTS
     mitkDataStorageTest.cpp
     mitkDataNodeTest.cpp
     mitkEventConfigTest.cpp
     mitkPointSetLocaleTest.cpp
     mitkImageTest.cpp
     mitkImageVtkMapper2DTest.cpp
     mitkImageVtkMapper2DLevelWindowTest.cpp
     mitkImageVtkMapper2DOpacityTest.cpp
     mitkImageVtkMapper2DResliceInterpolationPropertyTest.cpp
     mitkImageVtkMapper2DColorTest.cpp
     mitkImageVtkMapper2DSwivelTest.cpp
     mitkImageVtkMapper2DTransferFunctionTest.cpp
     mitkImageVtkMapper2DOpacityTransferFunctionTest.cpp
     mitkImageVtkMapper2DLookupTableTest.cpp
     mitkSurfaceVtkMapper3DTest
     mitkVolumeCalculatorTest.cpp
     mitkLevelWindowManagerTest.cpp
     mitkPointSetVtkMapper2DTest.cpp
     mitkPointSetVtkMapper2DImageTest.cpp
     mitkPointSetVtkMapper2DGlyphTypeTest.cpp
     mitkPointSetVtkMapper2DTransformedPointsTest.cpp
     mitkVTKRenderWindowSizeTest.cpp
     mitkMultiComponentImageDataComparisonFilterTest.cpp
     mitkImageToItkTest.cpp
     mitkImageSliceSelectorTest.cpp
 )
 
 # Currently not working on windows because of a rendering timing issue
 # see bug 18083 for details
 if(NOT WIN32)
  set(MODULE_CUSTOM_TESTS ${MODULE_CUSTOM_TESTS} mitkSurfaceDepthSortingTest.cpp)
 endif()
 
 set(RESOURCE_FILES
   Interactions/AddAndRemovePoints.xml
   Interactions/globalConfig.xml
   Interactions/StatemachineTest.xml
   Interactions/StatemachineConfigTest.xml
 )
diff --git a/Modules/Core/test/mitkPropertyRelationRuleBaseTest.cpp b/Modules/Core/test/mitkPropertyRelationRuleBaseTest.cpp
index 7a246e42dc..6ef8df3be1 100644
--- a/Modules/Core/test/mitkPropertyRelationRuleBaseTest.cpp
+++ b/Modules/Core/test/mitkPropertyRelationRuleBaseTest.cpp
@@ -1,919 +1,919 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 All rights reserved.
 
 This software is distributed WITHOUT ANY WARRANTY; without
 even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.
 
 See LICENSE.txt or http://www.mitk.org for details.
 
 ===================================================================*/
 
 #include "mitkPropertyRelationRuleBase.h"
 
 #include "mitkDataNode.h"
 #include "mitkPointSet.h"
 #include "mitkStringProperty.h"
 
 #include "mitkTestFixture.h"
 #include "mitkTestingMacros.h"
 
 #include <regex>
 
 /** This class is used to test PropertyRelationRuleBase and get access to internals where needed to test them as well.
  */
 namespace mitk
 {
   class TestRule : public mitk::PropertyRelationRuleBase
   {
   public:
     mitkClassMacro(TestRule, mitk::PropertyRelationRuleBase);
     itkFactorylessNewMacro(Self);
     itkCloneMacro(Self);
 
     using RuleIDType = PropertyRelationRuleBase::RuleIDType;
     using RelationUIDType = PropertyRelationRuleBase::RelationUIDType;
     using RelationUIDVectorType = PropertyRelationRuleBase::RelationUIDVectorType;
 
     RuleIDType GetRuleID() const override
     {
       if (m_AbstractMode)
       {
         return "TestRule";
       }
       else
       {
         return "TestRule_type1";
       }
     };
 
     std::string GetDisplayName() const override { return "TestDisplayName"; }
     std::string GetSourceRoleName() const override { return "source role"; }
     std::string GetDestinationRoleName() const override { return "destination role"; }
 
     bool m_AbstractMode;
 
     bool IsAbstract() const override { return m_AbstractMode; }
 
     using Superclass::GetRootKeyPath;
     using Superclass::Connect;
 
   protected:
     TestRule() : m_AbstractMode(false)
     {
     };
 
     ~TestRule() override = default;
 
     using InstanceIDType = PropertyRelationRuleBase::InstanceIDType;
     using InstanceIDVectorType = PropertyRelationRuleBase::InstanceIDVectorType;
 
     bool IsSupportedRuleID(const RuleIDType& ruleID) const override
     {
       if (m_AbstractMode)
       {
         return ruleID.find(this->GetRuleID()) == 0;
       }
       else
       {
         return Superclass::IsSupportedRuleID(ruleID);
       }
     };
 
     InstanceIDVectorType GetInstanceID_datalayer(const IPropertyProvider *source,
                                                          const IPropertyProvider *destination) const override
     {
       InstanceIDVectorType result;
 
       auto destProp = destination->GetConstProperty("name");
 
       if (destProp.IsNotNull())
       {
         auto destRegExStr =
           PropertyKeyPathToPropertyRegEx(Superclass::GetRootKeyPath().AddAnyElement().AddElement("dataHandle"));
         auto regEx = std::regex(destRegExStr);
         std::smatch instance_matches;
 
         auto keys = source->GetPropertyKeys();
 
         for (const auto &key : keys)
         {
           if (std::regex_search(key, instance_matches, regEx))
           {
             auto sourceProp = source->GetConstProperty(key);
             if (sourceProp->GetValueAsString() == destProp->GetValueAsString())
             {
               if (instance_matches.size()>1)
               {
                 result.push_back(instance_matches[1]);
               }
             }
           }
         }
       }
       return result;
     };
 
     bool HasImplicitDataRelation(const IPropertyProvider *source,
                                          const IPropertyProvider *destination) const override
     {
       auto destProp = destination->GetConstProperty("name");
       auto sourceProp = source->GetConstProperty("referencedName");
 
       return destProp.IsNotNull() && sourceProp.IsNotNull() &&
              destProp->GetValueAsString() == sourceProp->GetValueAsString();
     };
 
     void Connect_datalayer(IPropertyOwner *source,
                                    const IPropertyProvider *destination,
                                    const InstanceIDType &instanceID) const override
     {
       auto destProp = destination->GetConstProperty("name");
 
       source->SetProperty("referencedName", StringProperty::New(destProp->GetValueAsString()));
       source->SetProperty(
         PropertyKeyPathToPropertyName(Superclass::GetRootKeyPath().AddElement(instanceID).AddElement("dataHandle")),
         StringProperty::New(destProp->GetValueAsString()));
     };
 
     void Disconnect_datalayer(IPropertyOwner *source, const InstanceIDType & /*instanceID*/) const override
     {
       source->RemoveProperty("referencedName");
     };
   };
 } // namespace mitk
 
 class mitkPropertyRelationRuleBaseTestSuite : public mitk::TestFixture
 {
   CPPUNIT_TEST_SUITE(mitkPropertyRelationRuleBaseTestSuite);
 
   MITK_TEST(GetRootKeyPath);
   MITK_TEST(IsSourceCandidate);
   MITK_TEST(IsDestinationCandidate);
   MITK_TEST(IsSource);
   MITK_TEST(HasRelation);
   MITK_TEST(GetExistingRelations);
   MITK_TEST(GetRelationUIDs);
   MITK_TEST(GetSourceCandidateIndicator);
   MITK_TEST(GetDestinationCandidateIndicator);
   MITK_TEST(GetConnectedSourcesDetector);
   MITK_TEST(GetSourcesDetector);
   MITK_TEST(GetDestinationsDetector);
   MITK_TEST(GetDestinationDetector);
   MITK_TEST(Connect);
   MITK_TEST(Disconnect);
   MITK_TEST(Connect_abstract);
   MITK_TEST(Disconnect_abstract);
 
   CPPUNIT_TEST_SUITE_END();
 
 private:
   mitk::TestRule::Pointer rule;
   mitk::TestRule::Pointer abstractRule;
 
   mitk::DataNode::Pointer unRelated;
   mitk::PointSet::Pointer unRelated_1_data;
 
   mitk::DataNode::Pointer source_implicit_1;
   mitk::DataNode::Pointer source_data_1;
   mitk::DataNode::Pointer source_idOnly_1;
   mitk::DataNode::Pointer source_1;
 
   mitk::DataNode::Pointer source_multi;
 
   mitk::DataNode::Pointer source_otherRule;
 
   mitk::DataNode::Pointer source_otherTypeRule; //relevant for abstract rule checks. Abstract rule should see it concrete rule not.
 
   mitk::DataNode::Pointer dest_1;
   mitk::PointSet::Pointer dest_1_data;
   mitk::DataNode::Pointer dest_2;
   mitk::PointSet::Pointer dest_2_data;
 
   bool hasRelationProperties(mitk::IPropertyProvider *provider, std::string instance = "") const
   {
     auto keyPath = mitk::PropertyRelationRuleBase::GetRootKeyPath();
     if (!instance.empty())
     {
       keyPath.AddElement(instance);
     }
 
     auto prefix = mitk::PropertyKeyPathToPropertyName(keyPath);
     auto keys = provider->GetPropertyKeys();
 
     for (const auto &key : keys)
     {
       if (key.find(prefix) == 0)
       {
         return true;
       }
     }
 
     return false;
   }
 
 public:
   void setUp() override
   {
     rule = mitk::TestRule::New();
 
     abstractRule = mitk::TestRule::New();
     abstractRule->m_AbstractMode = true;
 
     unRelated = mitk::DataNode::New();
     unRelated->SetName("unRelated");
     unRelated_1_data = mitk::PointSet::New();
     unRelated->SetData(unRelated_1_data);
 
     dest_1 = mitk::DataNode::New();
     dest_1->SetName("dest_1");
     dest_1_data = mitk::PointSet::New();
     dest_1->SetData(dest_1_data);
 
     dest_2 = mitk::DataNode::New();
     dest_2->SetName("dest_2");
     dest_2_data = mitk::PointSet::New();
     dest_2->SetData(dest_2_data);
 
     source_implicit_1 = mitk::DataNode::New();
     source_implicit_1->AddProperty("referencedName", mitk::StringProperty::New(dest_1->GetName()));
 
     source_idOnly_1 = mitk::DataNode::New();
     std::string name = "MITK.Relations.1.relationUID";
     source_idOnly_1->AddProperty(name.c_str(), mitk::StringProperty::New("uid1"));
     name = "MITK.Relations.1.destinationUID";
     source_idOnly_1->AddProperty(name.c_str(), mitk::StringProperty::New(dest_1_data->GetUID()));
     name = "MITK.Relations.1.ruleID";
     source_idOnly_1->AddProperty(name.c_str(), mitk::StringProperty::New(rule->GetRuleID()));
 
     source_data_1 = source_implicit_1->Clone();
     name = "MITK.Relations.1.relationUID";
     source_data_1->AddProperty(name.c_str(), mitk::StringProperty::New("uid2"));
     name = "MITK.Relations.1.dataHandle";
     source_data_1->AddProperty(name.c_str(), mitk::StringProperty::New(dest_1->GetName()));
     name = "MITK.Relations.1.ruleID";
     source_data_1->AddProperty(name.c_str(), mitk::StringProperty::New(rule->GetRuleID()));
     name = "MITK.Relations.2.relationUID";
     source_data_1->AddProperty(name.c_str(), mitk::StringProperty::New("uid10"), nullptr, true);
     name = "MITK.Relations.2.destinationUID";
     source_data_1->AddProperty(name.c_str(), mitk::StringProperty::New(dest_1_data->GetUID()));
     name = "MITK.Relations.2.ruleID";
     source_data_1->AddProperty(name.c_str(), mitk::StringProperty::New("TestRule_othertype"));
 
     source_1 = source_data_1->Clone();
     name = "MITK.Relations.1.relationUID";
     source_1->AddProperty(name.c_str(), mitk::StringProperty::New("uid3"), nullptr, true);
     name = "MITK.Relations.1.destinationUID";
     source_1->AddProperty(name.c_str(), mitk::StringProperty::New(dest_1_data->GetUID()));
     name = "MITK.Relations.1.ruleID";
     source_1->AddProperty(name.c_str(), mitk::StringProperty::New(rule->GetRuleID()));
     name = "MITK.Relations.2.relationUID";
     source_1->AddProperty(name.c_str(), mitk::StringProperty::New("uid8"), nullptr, true);
     name = "MITK.Relations.2.destinationUID";
     source_1->AddProperty(name.c_str(), mitk::StringProperty::New(dest_2_data->GetUID()));
     name = "MITK.Relations.2.ruleID";
     source_1->AddProperty(name.c_str(), mitk::StringProperty::New("TestRule_othertype"));
 
     source_multi = source_1->Clone();
     name = "MITK.Relations.1.relationUID";
     source_multi->AddProperty(name.c_str(), mitk::StringProperty::New("uid4"), nullptr, true);
     name = "MITK.Relations.1.destinationUID";
     source_multi->AddProperty(name.c_str(), mitk::StringProperty::New(dest_1_data->GetUID()));
     name = "MITK.Relations.1.ruleID";
     source_multi->AddProperty(name.c_str(), mitk::StringProperty::New(rule->GetRuleID()));
     name = "MITK.Relations.4.relationUID";
     source_multi->AddProperty(name.c_str(), mitk::StringProperty::New("uid5"));
     name = "MITK.Relations.4.destinationUID";
     source_multi->AddProperty(name.c_str(), mitk::StringProperty::New(dest_2_data->GetUID()));
     name = "MITK.Relations.4.ruleID";
     source_multi->AddProperty(name.c_str(), mitk::StringProperty::New(rule->GetRuleID()));
     name = "MITK.Relations.2.relationUID";
     source_multi->AddProperty(name.c_str(), mitk::StringProperty::New("uid6"));
     name = "MITK.Relations.2.destinationUID";
     source_multi->AddProperty(name.c_str(), mitk::StringProperty::New("unknown"));
     name = "MITK.Relations.2.ruleID";
     source_multi->AddProperty(name.c_str(), mitk::StringProperty::New(rule->GetRuleID()));
 
     source_otherRule = mitk::DataNode::New();
     name = "MITK.Relations.1.relationUID";
     source_otherRule->AddProperty(name.c_str(), mitk::StringProperty::New("uid7"));
     name = "MITK.Relations.1.destinationUID";
     source_otherRule->AddProperty(name.c_str(), mitk::StringProperty::New(dest_1_data->GetUID()));
     name = "MITK.Relations.1.ruleID";
     source_otherRule->AddProperty(name.c_str(), mitk::StringProperty::New("otherRuleID"));
 
     source_otherTypeRule = mitk::DataNode::New();
     name = "MITK.Relations.1.relationUID";
     source_otherTypeRule->AddProperty(name.c_str(), mitk::StringProperty::New("uid9"));
     name = "MITK.Relations.1.destinationUID";
     source_otherTypeRule->AddProperty(name.c_str(), mitk::StringProperty::New(dest_1_data->GetUID()));
     name = "MITK.Relations.1.ruleID";
     source_otherTypeRule->AddProperty(name.c_str(), mitk::StringProperty::New("TestRule_othertype"));
   }
 
   void tearDown() override {}
 
   void GetRootKeyPath()
   {
     mitk::PropertyKeyPath ref;
     ref.AddElement("MITK").AddElement("Relations");
     CPPUNIT_ASSERT(mitk::PropertyRelationRuleBase::GetRootKeyPath() == ref);
   }
 
   void IsSourceCandidate()
   {
     CPPUNIT_ASSERT(rule->IsSourceCandidate(mitk::DataNode::New()));
     CPPUNIT_ASSERT(!rule->IsSourceCandidate(nullptr));
   }
 
   void IsDestinationCandidate()
   {
     CPPUNIT_ASSERT(rule->IsDestinationCandidate(mitk::DataNode::New()));
     CPPUNIT_ASSERT(!rule->IsDestinationCandidate(nullptr));
   }
 
   void IsSource()
   {
     CPPUNIT_ASSERT_THROW_MESSAGE(
       "Violated precondition (nullptr) does not throw.", rule->IsSource(nullptr), itk::ExceptionObject);
 
     CPPUNIT_ASSERT(!rule->IsSource(unRelated));
     CPPUNIT_ASSERT(!rule->IsSource(source_implicit_1));
     CPPUNIT_ASSERT(rule->IsSource(source_data_1));
     CPPUNIT_ASSERT(rule->IsSource(source_idOnly_1));
     CPPUNIT_ASSERT(rule->IsSource(source_1));
     CPPUNIT_ASSERT(rule->IsSource(source_multi));
 
     CPPUNIT_ASSERT(!rule->IsSource(source_otherRule));
     CPPUNIT_ASSERT(!rule->IsSource(source_otherTypeRule));
 
     CPPUNIT_ASSERT(!abstractRule->IsSource(unRelated));
     CPPUNIT_ASSERT(!abstractRule->IsSource(source_implicit_1));
     CPPUNIT_ASSERT(abstractRule->IsSource(source_data_1));
     CPPUNIT_ASSERT(abstractRule->IsSource(source_idOnly_1));
     CPPUNIT_ASSERT(abstractRule->IsSource(source_1));
     CPPUNIT_ASSERT(abstractRule->IsSource(source_multi));
 
     CPPUNIT_ASSERT(!abstractRule->IsSource(source_otherRule));
     CPPUNIT_ASSERT(abstractRule->IsSource(source_otherTypeRule));
   }
 
   void HasRelation()
   {
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (source is nullptr) does not throw.",
                                  rule->HasRelation(nullptr, dest_1),
                                  itk::ExceptionObject);
 
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (destination is nullptr) does not throw.",
                                  rule->HasRelation(source_1, nullptr),
                                  itk::ExceptionObject);
 
     CPPUNIT_ASSERT(rule->HasRelation(source_1, unRelated) == mitk::PropertyRelationRuleBase::RelationType::None);
     CPPUNIT_ASSERT(rule->HasRelation(unRelated, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
     CPPUNIT_ASSERT(rule->HasRelation(source_otherRule, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
     CPPUNIT_ASSERT(rule->HasRelation(source_otherTypeRule, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
 
     CPPUNIT_ASSERT(rule->HasRelation(source_implicit_1, dest_1) ==
                    mitk::PropertyRelationRuleBase::RelationType::Implicit_Data);
     CPPUNIT_ASSERT(rule->HasRelation(source_data_1, dest_1) ==
                    mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
     CPPUNIT_ASSERT(rule->HasRelation(source_idOnly_1, dest_1) ==
                    mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     CPPUNIT_ASSERT(rule->HasRelation(source_1, dest_1) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     CPPUNIT_ASSERT(rule->HasRelation(source_multi, dest_1) ==
                    mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
 
     CPPUNIT_ASSERT(rule->HasRelation(source_1, dest_2) == mitk::PropertyRelationRuleBase::RelationType::None);
     CPPUNIT_ASSERT(rule->HasRelation(source_multi, dest_2) ==
                    mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
 
 
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_1, unRelated) == mitk::PropertyRelationRuleBase::RelationType::None);
     CPPUNIT_ASSERT(abstractRule->HasRelation(unRelated, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_otherRule, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_otherTypeRule, dest_1) ==
       mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
 
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_implicit_1, dest_1) ==
       mitk::PropertyRelationRuleBase::RelationType::Implicit_Data);
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_data_1, dest_1) ==
       mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_idOnly_1, dest_1) ==
       mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_1, dest_1) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_multi, dest_1) ==
       mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
 
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_1, dest_2) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_multi, dest_2) ==
       mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
   }
 
   void GetExistingRelations()
   {
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (source is nullptr) does not throw.",
                                  rule->GetExistingRelations(nullptr),
                                  itk::ExceptionObject);
 
     CPPUNIT_ASSERT(rule->GetExistingRelations(unRelated).empty());
     CPPUNIT_ASSERT(rule->GetExistingRelations(source_otherRule).empty());
     CPPUNIT_ASSERT(rule->GetExistingRelations(source_otherTypeRule).empty());
     CPPUNIT_ASSERT(rule->GetExistingRelations(source_implicit_1).empty());
 
     auto uids = rule->GetExistingRelations(source_idOnly_1);
     CPPUNIT_ASSERT(uids.size() == 1);
     CPPUNIT_ASSERT(uids.front() == "uid1");
 
     uids = rule->GetExistingRelations(source_data_1);
     CPPUNIT_ASSERT(uids.size() == 1);
     CPPUNIT_ASSERT(uids.front() == "uid2");
 
     uids = rule->GetExistingRelations(source_1);
     CPPUNIT_ASSERT(uids.size() == 1);
     CPPUNIT_ASSERT(uids.front() == "uid3");
 
     uids = rule->GetExistingRelations(source_multi);
     CPPUNIT_ASSERT(uids.size() == 3);
     CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid4") != uids.end());
     CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid5") != uids.end());
     CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid6") != uids.end());
 
 
     CPPUNIT_ASSERT(abstractRule->GetExistingRelations(unRelated).empty());
     CPPUNIT_ASSERT(abstractRule->GetExistingRelations(source_otherRule).empty());
     CPPUNIT_ASSERT(abstractRule->GetExistingRelations(source_implicit_1).empty());
 
     uids = abstractRule->GetExistingRelations(source_idOnly_1);
     CPPUNIT_ASSERT(uids.size() == 1);
     CPPUNIT_ASSERT(uids.front() == "uid1");
 
     uids = abstractRule->GetExistingRelations(source_data_1);
     CPPUNIT_ASSERT(uids.size() == 2);
     CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid2") != uids.end());
     CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid10") != uids.end());
 
     uids = abstractRule->GetExistingRelations(source_1);
     CPPUNIT_ASSERT(uids.size() == 2);
     CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid3") != uids.end());
     CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid8") != uids.end());
 
     uids = abstractRule->GetExistingRelations(source_multi);
     CPPUNIT_ASSERT(uids.size() == 3);
     CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid4") != uids.end());
     CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid5") != uids.end());
     CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid6") != uids.end());
 
     uids = abstractRule->GetExistingRelations(source_otherTypeRule);
     CPPUNIT_ASSERT(uids.size() == 1);
     CPPUNIT_ASSERT(uids.front() == "uid9");
 
   }
 
   void GetRelationUIDs()
   {
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (source is nullptr) does not throw.",
                                  rule->GetRelationUIDs(nullptr, dest_1),
                                  itk::ExceptionObject);
 
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (destination is nullptr) does not throw.",
                                  rule->GetRelationUIDs(source_1, nullptr),
                                  itk::ExceptionObject);
 
     CPPUNIT_ASSERT(rule->GetRelationUIDs(source_1, unRelated).empty());
     CPPUNIT_ASSERT(rule->GetRelationUIDs(source_1, dest_2).empty());
     CPPUNIT_ASSERT(rule->GetRelationUIDs(unRelated, dest_1).empty());
     CPPUNIT_ASSERT(rule->GetRelationUIDs(source_otherRule, dest_1).empty());
     CPPUNIT_ASSERT(rule->GetRelationUIDs(source_otherTypeRule, dest_1).empty());
 
     CPPUNIT_ASSERT(rule->GetRelationUIDs(source_idOnly_1, dest_1).front() == "uid1");
     CPPUNIT_ASSERT(rule->GetRelationUIDs(source_data_1, dest_1).front() == "uid2");
     auto uids = rule->GetRelationUIDs(source_1, dest_1);
     CPPUNIT_ASSERT(uids.size() == 1);
     CPPUNIT_ASSERT(uids.front() == "uid3");
     CPPUNIT_ASSERT(rule->GetRelationUIDs(source_multi, dest_1).front() == "uid4");
     CPPUNIT_ASSERT(rule->GetRelationUIDs(source_multi, dest_2).front() == "uid5");
 
     CPPUNIT_ASSERT(abstractRule->GetRelationUIDs(source_1, unRelated).empty());
     CPPUNIT_ASSERT(abstractRule->GetRelationUIDs(unRelated, dest_1).empty());
     CPPUNIT_ASSERT(abstractRule->GetRelationUIDs(source_otherRule, dest_1).empty());
     CPPUNIT_ASSERT(abstractRule->GetRelationUIDs(source_otherTypeRule, dest_1).front() == "uid9");
 
     CPPUNIT_ASSERT(abstractRule->GetRelationUIDs(source_idOnly_1, dest_1).front() == "uid1");
     uids = abstractRule->GetRelationUIDs(source_data_1, dest_1);
     CPPUNIT_ASSERT(uids.size() == 2);
     CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid2") != uids.end());
     CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid10") != uids.end());
     uids = abstractRule->GetRelationUIDs(source_1, dest_1);
     CPPUNIT_ASSERT(uids.size() == 1);
     CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid3") != uids.end());
     uids = abstractRule->GetRelationUIDs(source_1, dest_2);
     CPPUNIT_ASSERT(uids.size() == 1);
     CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid8") != uids.end());
     CPPUNIT_ASSERT(abstractRule->GetRelationUIDs(source_1, dest_1).front() == "uid3");
     CPPUNIT_ASSERT(abstractRule->GetRelationUIDs(source_multi, dest_1).front() == "uid4");
     CPPUNIT_ASSERT(abstractRule->GetRelationUIDs(source_multi, dest_2).front() == "uid5");
 
   }
 
   void GetSourceCandidateIndicator()
   {
     auto predicate = rule->GetSourceCandidateIndicator();
 
     CPPUNIT_ASSERT(predicate->CheckNode(mitk::DataNode::New()));
     CPPUNIT_ASSERT(!predicate->CheckNode(nullptr));
   }
 
   void GetDestinationCandidateIndicator()
   {
     auto predicate = rule->GetDestinationCandidateIndicator();
 
     CPPUNIT_ASSERT(predicate->CheckNode(mitk::DataNode::New()));
     CPPUNIT_ASSERT(!predicate->CheckNode(nullptr));
   }
 
   void GetConnectedSourcesDetector()
   {
     auto predicate = rule->GetConnectedSourcesDetector();
 
     CPPUNIT_ASSERT(!predicate->CheckNode(nullptr));
     CPPUNIT_ASSERT(!predicate->CheckNode(unRelated));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_implicit_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_data_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_idOnly_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_multi));
 
     CPPUNIT_ASSERT(!predicate->CheckNode(source_otherRule));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_otherTypeRule));
 
 
     auto predicate2 = abstractRule->GetConnectedSourcesDetector();
 
     CPPUNIT_ASSERT(!predicate2->CheckNode(nullptr));
     CPPUNIT_ASSERT(!predicate2->CheckNode(unRelated));
     CPPUNIT_ASSERT(!predicate2->CheckNode(source_implicit_1));
     CPPUNIT_ASSERT(predicate2->CheckNode(source_data_1));
     CPPUNIT_ASSERT(predicate2->CheckNode(source_idOnly_1));
     CPPUNIT_ASSERT(predicate2->CheckNode(source_1));
     CPPUNIT_ASSERT(predicate2->CheckNode(source_multi));
 
     CPPUNIT_ASSERT(!predicate2->CheckNode(source_otherRule));
     CPPUNIT_ASSERT(predicate2->CheckNode(source_otherTypeRule));
   }
 
   void GetSourcesDetector()
   {
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (destination is nullptr) does not throw.",
                                  rule->GetSourcesDetector(nullptr),
                                  itk::ExceptionObject);
 
     auto predicate = rule->GetSourcesDetector(dest_1);
 
     CPPUNIT_ASSERT(!predicate->CheckNode(unRelated));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_otherRule));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_otherTypeRule));
 
     CPPUNIT_ASSERT(predicate->CheckNode(source_implicit_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_data_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_idOnly_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_multi));
 
     predicate = rule->GetSourcesDetector(dest_1, mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
 
     CPPUNIT_ASSERT(!predicate->CheckNode(unRelated));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_otherRule));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_otherTypeRule));
 
     CPPUNIT_ASSERT(!predicate->CheckNode(source_implicit_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_data_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_idOnly_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_multi));
 
     predicate = rule->GetSourcesDetector(dest_1, mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
 
     CPPUNIT_ASSERT(!predicate->CheckNode(unRelated));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_otherRule));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_otherTypeRule));
 
     CPPUNIT_ASSERT(!predicate->CheckNode(source_implicit_1));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_data_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_idOnly_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_multi));
 
     predicate = rule->GetSourcesDetector(dest_2, mitk::PropertyRelationRuleBase::RelationType::Implicit_Data);
 
     CPPUNIT_ASSERT(!predicate->CheckNode(unRelated));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_otherRule));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_otherTypeRule));
 
     CPPUNIT_ASSERT(!predicate->CheckNode(source_implicit_1));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_data_1));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_idOnly_1));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_multi));
 
     predicate = abstractRule->GetSourcesDetector(dest_1, mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
 
     CPPUNIT_ASSERT(!predicate->CheckNode(unRelated));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_otherRule));
     CPPUNIT_ASSERT(predicate->CheckNode(source_otherTypeRule));
 
     CPPUNIT_ASSERT(!predicate->CheckNode(source_implicit_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_data_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_idOnly_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_multi));
 
     predicate = abstractRule->GetSourcesDetector(dest_1);
 
     CPPUNIT_ASSERT(!predicate->CheckNode(unRelated));
     CPPUNIT_ASSERT(!predicate->CheckNode(source_otherRule));
     CPPUNIT_ASSERT(predicate->CheckNode(source_otherTypeRule));
 
     CPPUNIT_ASSERT(predicate->CheckNode(source_implicit_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_data_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_idOnly_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_1));
     CPPUNIT_ASSERT(predicate->CheckNode(source_multi));
   }
 
   void GetDestinationsDetector()
   {
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (source is nullptr) does not throw.",
                                  rule->GetDestinationsDetector(nullptr),
                                  itk::ExceptionObject);
 
     auto predicate = rule->GetDestinationsDetector(source_otherRule);
     CPPUNIT_ASSERT(!predicate->CheckNode(dest_1));
 
     predicate = rule->GetDestinationsDetector(source_otherTypeRule);
     CPPUNIT_ASSERT(!predicate->CheckNode(dest_1));
 
     predicate = rule->GetDestinationsDetector(source_implicit_1);
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
     predicate =
       rule->GetDestinationsDetector(source_implicit_1, mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
     CPPUNIT_ASSERT(!predicate->CheckNode(dest_1));
 
     predicate = rule->GetDestinationsDetector(source_data_1);
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
     predicate =
       rule->GetDestinationsDetector(source_data_1, mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
     predicate =
       rule->GetDestinationsDetector(source_data_1, mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     CPPUNIT_ASSERT(!predicate->CheckNode(dest_1));
 
     predicate = rule->GetDestinationsDetector(source_idOnly_1);
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
     predicate =
       rule->GetDestinationsDetector(source_idOnly_1, mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
     predicate =
       rule->GetDestinationsDetector(source_idOnly_1, mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
 
     predicate = rule->GetDestinationsDetector(source_1);
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
     CPPUNIT_ASSERT(!predicate->CheckNode(unRelated));
     CPPUNIT_ASSERT(!predicate->CheckNode(dest_2));
     predicate =
       rule->GetDestinationsDetector(source_1, mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
     CPPUNIT_ASSERT(!predicate->CheckNode(unRelated));
     CPPUNIT_ASSERT(!predicate->CheckNode(dest_2));
     predicate =
       rule->GetDestinationsDetector(source_1, mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
     CPPUNIT_ASSERT(!predicate->CheckNode(unRelated));
     CPPUNIT_ASSERT(!predicate->CheckNode(dest_2));
 
     predicate = rule->GetDestinationsDetector(source_multi);
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
     CPPUNIT_ASSERT(predicate->CheckNode(dest_2));
     predicate =
       rule->GetDestinationsDetector(source_multi, mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
     CPPUNIT_ASSERT(predicate->CheckNode(dest_2));
     predicate =
       rule->GetDestinationsDetector(source_multi, mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
     CPPUNIT_ASSERT(predicate->CheckNode(dest_2));
 
     predicate = abstractRule->GetDestinationsDetector(source_otherTypeRule);
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
     predicate = abstractRule->GetDestinationsDetector(source_otherTypeRule);
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
 
   }
 
   void GetDestinationDetector()
   {
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (source is nullptr) does not throw.",
                                  rule->GetDestinationDetector(nullptr, "uid1"),
                                  itk::ExceptionObject);
 
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (relation uid is invalid) does not throw.",
                                  rule->GetDestinationDetector(source_1, "invalid uid"),
                                  itk::ExceptionObject);
 
     auto predicate = rule->GetDestinationDetector(source_1, "uid3");
     CPPUNIT_ASSERT(!predicate->CheckNode(unRelated));
     CPPUNIT_ASSERT(predicate->CheckNode(dest_1));
     CPPUNIT_ASSERT(!predicate->CheckNode(dest_2));
 
     predicate = rule->GetDestinationDetector(source_multi, "uid5");
     CPPUNIT_ASSERT(!predicate->CheckNode(unRelated));
     CPPUNIT_ASSERT(!predicate->CheckNode(dest_1));
     CPPUNIT_ASSERT(predicate->CheckNode(dest_2));
   }
 
   void Connect()
   {
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (source is nullptr) does not throw.",
                                  rule->Connect(nullptr, dest_1),
                                  itk::ExceptionObject);
 
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (destination is nullptr) does not throw.",
                                  rule->Connect(source_1, nullptr),
                                  itk::ExceptionObject);
 
     // check upgrade of an implicit connection
     CPPUNIT_ASSERT(rule->HasRelation(source_implicit_1, dest_1) ==
                    mitk::PropertyRelationRuleBase::RelationType::Implicit_Data);
     rule->Connect(source_implicit_1, dest_1);
     CPPUNIT_ASSERT(rule->HasRelation(source_implicit_1, dest_1) ==
                    mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
 
     // check upgrade of an data connection
     CPPUNIT_ASSERT(rule->HasRelation(source_data_1, dest_1) ==
                    mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
     rule->Connect(source_data_1, dest_1);
     CPPUNIT_ASSERT(rule->HasRelation(source_data_1, dest_1) ==
                    mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     std::string name = "MITK.Relations.1.destinationUID";
     auto prop = source_data_1->GetProperty(name.c_str());
     CPPUNIT_ASSERT_MESSAGE(
       "Destination uid was not stored with the correct key. Already existing session should be used.", prop);
-    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was not stored.", prop->GetValueAsString() == dest_1_data->GetUID());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was  stored.", prop->GetValueAsString() == dest_1_data->GetUID());
 
     // check actualization of an id only connection
     rule->Connect(source_idOnly_1, dest_1);
     CPPUNIT_ASSERT(rule->HasRelation(source_idOnly_1, dest_1) ==
                    mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     CPPUNIT_ASSERT_MESSAGE("Additional relation was defined instead of updating exting one.",
                            rule->GetExistingRelations(source_1).size() == 1);
     name = "MITK.Relations.1.dataHandle";
     prop = source_idOnly_1->GetProperty(name.c_str());
     CPPUNIT_ASSERT_MESSAGE(
       "Data layer information was not stored with the correct key. Already existing session should be used.", prop);
-    CPPUNIT_ASSERT_MESSAGE("Incorrect data layer information was not stored.",
+    CPPUNIT_ASSERT_MESSAGE("Incorrect data layer information not stored.",
                            prop->GetValueAsString() == dest_1->GetName());
     prop = source_idOnly_1->GetProperty("referencedName");
     CPPUNIT_ASSERT_MESSAGE(
       "Data layer information was not stored with the correct key. Already existing session should be used.", prop);
-    CPPUNIT_ASSERT_MESSAGE("Incorrect data layer information was not stored.",
+    CPPUNIT_ASSERT_MESSAGE("Incorrect data layer information was stored.",
                            prop->GetValueAsString() == dest_1->GetName());
 
     // check actualization of an existing connection
     rule->Connect(source_1, dest_1);
     CPPUNIT_ASSERT(rule->HasRelation(source_1, dest_1) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     CPPUNIT_ASSERT_MESSAGE("Additional relation was defined instead of updating exting one.",
                            rule->GetExistingRelations(source_1).size() == 1);
 
     // check new connection
     auto newConnectUID = rule->Connect(source_multi, unRelated);
     CPPUNIT_ASSERT(rule->HasRelation(source_multi, unRelated) ==
                    mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     name = "MITK.Relations.5.dataHandle";
     prop = source_multi->GetProperty(name.c_str());
     CPPUNIT_ASSERT_MESSAGE(
       "Data layer information was not stored with the correct key. Already existing session should be used.", prop);
-    CPPUNIT_ASSERT_MESSAGE("Incorrect data layer information was not stored.",
+    CPPUNIT_ASSERT_MESSAGE("Incorrect data layer information was stored.",
                            prop->GetValueAsString() == unRelated->GetName());
     prop = source_multi->GetProperty("referencedName");
     CPPUNIT_ASSERT_MESSAGE(
       "Data layer information was not stored with the correct key. Already existing session should be used.", prop);
-    CPPUNIT_ASSERT_MESSAGE("Incorrect data layer information was not stored.",
+    CPPUNIT_ASSERT_MESSAGE("Incorrect data layer information was stored.",
                            prop->GetValueAsString() == unRelated->GetName());
     name = "MITK.Relations.5.destinationUID";
     prop = source_multi->GetProperty(name.c_str());
     CPPUNIT_ASSERT_MESSAGE(
       "Destination uid was not stored with the correct key. Already existing session should be used.", prop);
-    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was not stored.", prop->GetValueAsString() == unRelated_1_data->GetUID());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was stored.", prop->GetValueAsString() == unRelated_1_data->GetUID());
 
     auto storedRelationUIDs = rule->GetRelationUIDs(source_multi, unRelated);
     CPPUNIT_ASSERT_MESSAGE(
       "Relation uid was not stored for given source and destination.", storedRelationUIDs.size() == 1);
-    CPPUNIT_ASSERT_MESSAGE("Incorrect Relation uid was not stored.", storedRelationUIDs[0] == newConnectUID);
+    CPPUNIT_ASSERT_MESSAGE("Incorrect Relation uid was stored.", storedRelationUIDs[0] == newConnectUID);
   }
 
   void Disconnect()
   {
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (source is nullptr) does not throw.",
                                  rule->Disconnect(nullptr, dest_1),
                                  itk::ExceptionObject);
 
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (destination is nullptr) does not throw.",
                                  rule->Disconnect(source_1, nullptr),
                                  itk::ExceptionObject);
 
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (destination is nullptr) does not throw.",
                                  rule->Disconnect(nullptr, "uid"),
                                  itk::ExceptionObject);
 
     CPPUNIT_ASSERT(rule->HasRelation(source_1, unRelated) == mitk::PropertyRelationRuleBase::RelationType::None);
     rule->Disconnect(source_1, unRelated);
     CPPUNIT_ASSERT(rule->HasRelation(source_1, unRelated) == mitk::PropertyRelationRuleBase::RelationType::None);
     CPPUNIT_ASSERT_MESSAGE("Data property was not removed.", !source_1->GetProperty("referencedName"));
 
     rule->Disconnect(source_1, dest_2);
     CPPUNIT_ASSERT(rule->HasRelation(source_1, dest_2) == mitk::PropertyRelationRuleBase::RelationType::None);
     CPPUNIT_ASSERT(this->hasRelationProperties(source_1));
 
     CPPUNIT_ASSERT(rule->HasRelation(source_1, dest_1) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     rule->Disconnect(source_1, dest_1);
     CPPUNIT_ASSERT(rule->HasRelation(source_1, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
     CPPUNIT_ASSERT(!this->hasRelationProperties(source_1, "1"));
     CPPUNIT_ASSERT_MESSAGE("Data of other rule type was removed.",this->hasRelationProperties(source_1, "2"));
 
     CPPUNIT_ASSERT(rule->HasRelation(source_multi, dest_1) ==
                    mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     rule->Disconnect(source_multi, dest_1);
     CPPUNIT_ASSERT(rule->HasRelation(source_multi, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
     CPPUNIT_ASSERT(!this->hasRelationProperties(source_multi, "1"));
     CPPUNIT_ASSERT(this->hasRelationProperties(source_multi, "2"));
     CPPUNIT_ASSERT(this->hasRelationProperties(source_multi, "4"));
 
     rule->Disconnect(source_multi, "uid6");
     CPPUNIT_ASSERT(!this->hasRelationProperties(source_multi, "1"));
     CPPUNIT_ASSERT(!this->hasRelationProperties(source_multi, "2"));
     CPPUNIT_ASSERT(this->hasRelationProperties(source_multi, "4"));
 
     rule->Disconnect(source_multi, "unkownRelationUID");
     CPPUNIT_ASSERT(!this->hasRelationProperties(source_multi, "1"));
     CPPUNIT_ASSERT(!this->hasRelationProperties(source_multi, "2"));
     CPPUNIT_ASSERT(this->hasRelationProperties(source_multi, "4"));
 
     rule->Disconnect(source_otherTypeRule, dest_1);
     CPPUNIT_ASSERT_MESSAGE("Data of other rule type was removed.", this->hasRelationProperties(source_otherTypeRule, "1"));
   }
 
   void Connect_abstract()
   {
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (abstract does not connect) does not throw.",
       abstractRule->Connect(nullptr, dest_1),
       itk::ExceptionObject);
 
     CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (abstract does not connect) does not throw.",
       abstractRule->Connect(source_1, nullptr),
       itk::ExceptionObject);
   }
 
   void Disconnect_abstract()
   {
 
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_1, dest_2) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     abstractRule->Disconnect(source_1, dest_2);
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_1, dest_2) == mitk::PropertyRelationRuleBase::RelationType::None);
     CPPUNIT_ASSERT(!this->hasRelationProperties(source_1, "2"));
 
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_1, dest_1) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     abstractRule->Disconnect(source_1, dest_1);
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_1, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
     CPPUNIT_ASSERT(!this->hasRelationProperties(source_1, "1"));
 
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_multi, dest_1) ==
       mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
     abstractRule->Disconnect(source_multi, dest_1);
     CPPUNIT_ASSERT(abstractRule->HasRelation(source_multi, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
     CPPUNIT_ASSERT(!this->hasRelationProperties(source_multi, "1"));
     CPPUNIT_ASSERT(this->hasRelationProperties(source_multi, "2"));
     CPPUNIT_ASSERT(this->hasRelationProperties(source_multi, "4"));
 
     abstractRule->Disconnect(source_multi, "uid6");
     CPPUNIT_ASSERT(!this->hasRelationProperties(source_multi, "1"));
     CPPUNIT_ASSERT(!this->hasRelationProperties(source_multi, "2"));
     CPPUNIT_ASSERT(this->hasRelationProperties(source_multi, "4"));
 
     abstractRule->Disconnect(source_multi, "unkownRelationUID");
     CPPUNIT_ASSERT(!this->hasRelationProperties(source_multi, "1"));
     CPPUNIT_ASSERT(!this->hasRelationProperties(source_multi, "2"));
     CPPUNIT_ASSERT(this->hasRelationProperties(source_multi, "4"));
 
     abstractRule->Disconnect(source_otherTypeRule, dest_1);
     CPPUNIT_ASSERT_MESSAGE("Data of other rule type was removed.", !this->hasRelationProperties(source_otherTypeRule, "1"));
 
   }
 
 };
 
 MITK_TEST_SUITE_REGISTRATION(mitkPropertyRelationRuleBase)
diff --git a/Modules/Core/test/mitkSourceImageRelationRuleTest.cpp b/Modules/Core/test/mitkSourceImageRelationRuleTest.cpp
new file mode 100644
index 0000000000..bb97c0baf0
--- /dev/null
+++ b/Modules/Core/test/mitkSourceImageRelationRuleTest.cpp
@@ -0,0 +1,884 @@
+/*===================================================================
+
+The Medical Imaging Interaction Toolkit (MITK)
+
+Copyright (c) German Cancer Research Center,
+Division of Medical and Biological Informatics.
+All rights reserved.
+
+This software is distributed WITHOUT ANY WARRANTY; without
+even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.
+
+See LICENSE.txt or http://www.mitk.org for details.
+
+===================================================================*/
+
+#include "mitkSourceImageRelationRule.h"
+
+#include "mitkDataNode.h"
+#include "mitkPointSet.h"
+#include "mitkStringProperty.h"
+
+#include "mitkTestFixture.h"
+#include "mitkTestingMacros.h"
+#include "mitkPropertyNameHelper.h"
+#include "mitkTemporoSpatialStringProperty.h"
+#include "mitkPropertyNameHelper.h"
+
+#include <regex>
+
+class mitkSourceImageRelationRuleTestSuite : public mitk::TestFixture
+{
+  CPPUNIT_TEST_SUITE(mitkSourceImageRelationRuleTestSuite);
+
+  MITK_TEST(IsSourceCandidate);
+  MITK_TEST(IsDestinationCandidate);
+  MITK_TEST(IsSource);
+  MITK_TEST(HasRelation);
+  MITK_TEST(GetExistingRelations);
+  MITK_TEST(GetRelationUIDs);
+  MITK_TEST(GetSourceCandidateIndicator);
+  MITK_TEST(GetDestinationCandidateIndicator);
+  MITK_TEST(GetConnectedSourcesDetector);
+  MITK_TEST(GetSourcesDetector);
+  MITK_TEST(GetDestinationsDetector);
+  MITK_TEST(GetDestinationDetector);
+  MITK_TEST(Connect);
+  MITK_TEST(Disconnect);
+  MITK_TEST(Connect_abstract);
+  MITK_TEST(Disconnect_abstract);
+
+  CPPUNIT_TEST_SUITE_END();
+
+private:
+  mitk::SourceImageRelationRule::Pointer rule;
+  mitk::SourceImageRelationRule::Pointer abstractRule;
+
+  mitk::Image::Pointer unRelated;
+  mitk::DataNode::Pointer unRelated_Node;
+
+  mitk::Image::Pointer source_implicit_1;
+  mitk::DataNode::Pointer source_implicit_1_Node;
+  mitk::Image::Pointer source_data_1;
+  mitk::DataNode::Pointer source_data_1_Node;
+  mitk::Image::Pointer source_idOnly_1;
+  mitk::DataNode::Pointer source_idOnly_1_Node;
+  mitk::Image::Pointer source_1;
+  mitk::DataNode::Pointer source_1_Node;
+
+  mitk::Image::Pointer source_otherRule;
+  mitk::DataNode::Pointer source_otherRule_Node;
+
+  mitk::Image::Pointer source_otherPurpose;
+  mitk::DataNode::Pointer source_otherPurpose_Node; //relevant for abstract rule checks. Abstract rule should see it concrete rule not.
+
+  mitk::DataNode::Pointer dest_1_Node;
+  mitk::Image::Pointer dest_1;
+  mitk::DataNode::Pointer dest_2_Node;
+  mitk::Image::Pointer dest_2;
+
+  bool hasRelationProperties(mitk::IPropertyProvider *provider, std::string instance = "") const
+  {
+    auto keyPath = mitk::PropertyRelationRuleBase::GetRootKeyPath();
+    if (!instance.empty())
+    {
+      keyPath.AddElement(instance);
+    }
+
+    auto prefix = mitk::PropertyKeyPathToPropertyName(keyPath);
+    auto keys = provider->GetPropertyKeys();
+
+    for (const auto &key : keys)
+    {
+      if (key.find(prefix) == 0)
+      {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  std::vector<std::string> GetReferenceSequenceIndices(const mitk::IPropertyProvider * source,
+    const mitk::IPropertyProvider * destination) const
+  {
+    std::vector<std::string> result;
+
+    auto destInstanceUIDProp = destination->GetConstProperty(mitk::GeneratePropertyNameForDICOMTag(0x0008, 0x0018));
+
+    if (destInstanceUIDProp.IsNull())
+    {
+      return result;
+    }
+
+    mitk::PropertyKeyPath referencedInstanceUIDs;
+    referencedInstanceUIDs.AddElement("DICOM").AddElement("0008").AddAnySelection("2112").AddElement("0008").AddElement("1155");
+
+    auto sourceRegExStr = PropertyKeyPathToPropertyRegEx(referencedInstanceUIDs);;
+    auto regEx = std::regex(sourceRegExStr);
+
+    std::vector<std::string> keys;
+    //workaround until T24729 is done. Please remove if T24728 is done
+    keys = source->GetPropertyKeys();
+    //end workaround for T24729
+
+    for (const auto &key : keys)
+    {
+      if (std::regex_match(key, regEx))
+      {
+        auto refUIDProp = source->GetConstProperty(key);
+        if (*refUIDProp == *destInstanceUIDProp)
+        {
+          mitk::PropertyKeyPath finding = mitk::PropertyNameToPropertyKeyPath(key);
+          result.push_back(std::to_string(finding.GetNode(2).selection));
+        }
+      }
+    }
+
+    return result;
+  };
+
+  void SetDICOMReferenceInfo(mitk::IPropertyOwner* owner, const std::string& instanceUID, const std::string& classUID, const std::string& purpose, unsigned int sequElement)
+  {
+    mitk::PropertyKeyPath refInstanceUIDPath;
+    refInstanceUIDPath.AddElement("DICOM").AddElement("0008").AddSelection("2112", sequElement).AddElement("0008").AddElement("1155");
+    owner->SetProperty(PropertyKeyPathToPropertyName(refInstanceUIDPath), mitk::TemporoSpatialStringProperty::New(instanceUID));
+
+    mitk::PropertyKeyPath refClassUIDPath;
+    refClassUIDPath.AddElement("DICOM").AddElement("0008").AddSelection("2112", sequElement).AddElement("0008").AddElement("1150");
+    owner->SetProperty(PropertyKeyPathToPropertyName(refClassUIDPath), mitk::TemporoSpatialStringProperty::New(classUID));
+
+    mitk::PropertyKeyPath purposePath;
+    purposePath.AddElement("DICOM").AddElement("0008").AddSelection("2112", sequElement).AddElement("0040").AddSelection("a170", 0).AddElement("0008").AddElement("0104");
+    owner->SetProperty(PropertyKeyPathToPropertyName(purposePath), mitk::TemporoSpatialStringProperty::New(purpose));
+  }
+
+  bool IsCorrectDICOMReference(const mitk::IPropertyOwner* owner, const std::string& instanceUID, const std::string& classUID, const std::string& purpose, unsigned int sequElement) const
+  {
+    mitk::PropertyKeyPath refInstanceUIDPath;
+    refInstanceUIDPath.AddElement("DICOM").AddElement("0008").AddSelection("2112", sequElement).AddElement("0008").AddElement("1155");
+    auto prop = owner->GetConstProperty(PropertyKeyPathToPropertyName(refInstanceUIDPath));
+    if (prop->GetValueAsString() != instanceUID)
+    {
+      return false;
+    }
+
+    mitk::PropertyKeyPath refClassUIDPath;
+    refClassUIDPath.AddElement("DICOM").AddElement("0008").AddSelection("2112", sequElement).AddElement("0008").AddElement("1150");
+    prop = owner->GetConstProperty(PropertyKeyPathToPropertyName(refClassUIDPath));
+    if (prop->GetValueAsString() != classUID)
+    {
+      return false;
+    }
+
+    mitk::PropertyKeyPath purposePath;
+    purposePath.AddElement("DICOM").AddElement("0008").AddSelection("2112", sequElement).AddElement("0040").AddSelection("a170", 0).AddElement("0008").AddElement("0104");
+    prop = owner->GetConstProperty(PropertyKeyPathToPropertyName(purposePath));
+    if (prop->GetValueAsString() != purpose)
+    {
+      return false;
+    }
+
+    return true;
+  }
+
+
+public:
+  void setUp() override
+  {
+    auto instanceUIDPropName = mitk::GeneratePropertyNameForDICOMTag(0x0008, 0x0018);
+    auto classUIDPropName = mitk::GeneratePropertyNameForDICOMTag(0x0008, 0x0016);
+
+    rule = mitk::SourceImageRelationRule::New("Test");
+
+    abstractRule = mitk::SourceImageRelationRule::New();
+
+    unRelated = mitk::Image::New();
+    unRelated->SetProperty(instanceUIDPropName, mitk::TemporoSpatialStringProperty::New("unRelated"));
+    unRelated->SetProperty(classUIDPropName, mitk::TemporoSpatialStringProperty::New("image"));
+    unRelated_Node = mitk::DataNode::New();
+    unRelated_Node->SetData(unRelated);
+
+    dest_1_Node = mitk::DataNode::New();
+    dest_1_Node->SetName("dest_1");
+    dest_1 = mitk::Image::New();
+    dest_1->SetProperty(instanceUIDPropName, mitk::TemporoSpatialStringProperty::New("dest_1"));
+    dest_1->SetProperty(classUIDPropName, mitk::TemporoSpatialStringProperty::New("image"));
+    dest_1_Node->SetData(dest_1);
+
+
+
+    dest_2_Node = mitk::DataNode::New();
+    dest_2_Node->SetName("dest_2");
+    dest_2 = mitk::Image::New();
+    dest_2->SetProperty(instanceUIDPropName, mitk::TemporoSpatialStringProperty::New("dest_2"));
+    dest_2->SetProperty(classUIDPropName, mitk::TemporoSpatialStringProperty::New("image"));
+    dest_2_Node->SetData(dest_2);
+
+    source_implicit_1 = mitk::Image::New();
+    SetDICOMReferenceInfo(source_implicit_1, "dest_1", "image", "Test", 0);
+    source_implicit_1_Node = mitk::DataNode::New();
+    source_implicit_1_Node->SetData(source_implicit_1);
+
+    source_idOnly_1 = mitk::Image::New();
+    std::string name = "MITK.Relations.1.relationUID";
+    source_idOnly_1->SetProperty(name.c_str(), mitk::StringProperty::New("uid1"));
+    name = "MITK.Relations.1.destinationUID";
+    source_idOnly_1->SetProperty(name.c_str(), mitk::StringProperty::New(dest_1->GetUID()));
+    name = "MITK.Relations.1.ruleID";
+    source_idOnly_1->SetProperty(name.c_str(), mitk::StringProperty::New(rule->GetRuleID()));
+    source_idOnly_1_Node = mitk::DataNode::New();
+    source_idOnly_1_Node->SetData(source_idOnly_1);
+
+    source_data_1 = mitk::Image::New();
+    SetDICOMReferenceInfo(source_data_1, "dest_1", "image", "Test", 0);
+    SetDICOMReferenceInfo(source_data_1, "dest_2", "image", "otherpurpose", 1);
+    name = "MITK.Relations.1.relationUID";
+    source_data_1->SetProperty(name.c_str(), mitk::StringProperty::New("uid2"));
+    name = "MITK.Relations.1.ruleID";
+    source_data_1->SetProperty(name.c_str(), mitk::StringProperty::New(rule->GetRuleID()));
+    name = "MITK.Relations.1.SourceImageSequenceItem";
+    source_data_1->SetProperty(name.c_str(), mitk::StringProperty::New("0"));
+    name = "MITK.Relations.2.relationUID";
+    source_data_1->SetProperty(name.c_str(), mitk::StringProperty::New("uid10"));
+    name = "MITK.Relations.2.SourceImageSequenceItem";
+    source_data_1->SetProperty(name.c_str(), mitk::StringProperty::New("1"));
+    name = "MITK.Relations.2.ruleID";
+    source_data_1->SetProperty(name.c_str(), mitk::StringProperty::New("SourceImageRelation otherpurpose"));
+    source_data_1_Node = mitk::DataNode::New();
+    source_data_1_Node->SetData(source_data_1);
+
+    source_1 = mitk::Image::New();
+    SetDICOMReferenceInfo(source_1, "dest_1", "image", "Test", 0);
+    SetDICOMReferenceInfo(source_1, "dest_2", "image", "otherpurpose", 1);
+    name = "MITK.Relations.1.relationUID";
+    source_1->SetProperty(name.c_str(), mitk::StringProperty::New("uid3"));
+    name = "MITK.Relations.1.destinationUID";
+    source_1->SetProperty(name.c_str(), mitk::StringProperty::New(dest_1->GetUID()));
+    name = "MITK.Relations.1.ruleID";
+    source_1->SetProperty(name.c_str(), mitk::StringProperty::New(rule->GetRuleID()));
+    name = "MITK.Relations.1.SourceImageSequenceItem";
+    source_1->SetProperty(name.c_str(), mitk::StringProperty::New("0"));
+    name = "MITK.Relations.2.relationUID";
+    source_1->SetProperty(name.c_str(), mitk::StringProperty::New("uid8"));
+    name = "MITK.Relations.2.destinationUID";
+    source_1->SetProperty(name.c_str(), mitk::StringProperty::New(dest_2->GetUID()));
+    name = "MITK.Relations.2.ruleID";
+    source_1->SetProperty(name.c_str(), mitk::StringProperty::New("SourceImageRelation otherpurpose"));
+    name = "MITK.Relations.2.SourceImageSequenceItem";
+    source_1->SetProperty(name.c_str(), mitk::StringProperty::New("1"));
+    source_1_Node = mitk::DataNode::New();
+    source_1_Node->SetData(source_1);
+
+    source_otherRule = mitk::Image::New();
+    name = "MITK.Relations.1.relationUID";
+    source_otherRule->SetProperty(name.c_str(), mitk::StringProperty::New("uid7"));
+    name = "MITK.Relations.1.destinationUID";
+    source_otherRule->SetProperty(name.c_str(), mitk::StringProperty::New(dest_1->GetUID()));
+    name = "MITK.Relations.1.ruleID";
+    source_otherRule->SetProperty(name.c_str(), mitk::StringProperty::New("otherRuleID"));
+    source_otherRule_Node = mitk::DataNode::New();
+    source_otherRule_Node->SetData(source_otherRule);
+
+    source_otherPurpose = mitk::Image::New();
+    name = "MITK.Relations.1.relationUID";
+    source_otherPurpose->SetProperty(name.c_str(), mitk::StringProperty::New("uid9"));
+    name = "MITK.Relations.1.destinationUID";
+    source_otherPurpose->SetProperty(name.c_str(), mitk::StringProperty::New(dest_1->GetUID()));
+    name = "MITK.Relations.1.ruleID";
+    source_otherPurpose->SetProperty(name.c_str(), mitk::StringProperty::New("SourceImageRelation otherpurpose"));
+    source_otherPurpose_Node = mitk::DataNode::New();
+    source_otherPurpose_Node->SetData(source_otherPurpose);
+  }
+
+  void tearDown() override {}
+
+  void IsSourceCandidate()
+  {
+    CPPUNIT_ASSERT(rule->IsSourceCandidate(mitk::DataNode::New()));
+    CPPUNIT_ASSERT(!rule->IsSourceCandidate(nullptr));
+  }
+
+  void IsDestinationCandidate()
+  {
+    CPPUNIT_ASSERT(rule->IsDestinationCandidate(this->dest_1_Node));
+    CPPUNIT_ASSERT(rule->IsDestinationCandidate(this->dest_1));
+    CPPUNIT_ASSERT(!rule->IsDestinationCandidate(mitk::DataNode::New()));
+    CPPUNIT_ASSERT(!rule->IsDestinationCandidate(nullptr));
+  }
+
+  void IsSource()
+  {
+    CPPUNIT_ASSERT_THROW_MESSAGE(
+      "Violated precondition (nullptr) does not throw.", rule->IsSource(nullptr), itk::ExceptionObject);
+
+    CPPUNIT_ASSERT(!rule->IsSource(unRelated));
+    CPPUNIT_ASSERT(!rule->IsSource(source_implicit_1));
+    CPPUNIT_ASSERT(rule->IsSource(source_data_1));
+    CPPUNIT_ASSERT(rule->IsSource(source_idOnly_1));
+    CPPUNIT_ASSERT(rule->IsSource(source_1));
+
+    CPPUNIT_ASSERT(!rule->IsSource(source_otherRule));
+    CPPUNIT_ASSERT(!rule->IsSource(source_otherPurpose));
+
+    CPPUNIT_ASSERT(!rule->IsSource(source_implicit_1_Node));
+    CPPUNIT_ASSERT(rule->IsSource(source_data_1_Node));
+    CPPUNIT_ASSERT(rule->IsSource(source_idOnly_1_Node));
+    CPPUNIT_ASSERT(rule->IsSource(source_1_Node));
+
+    CPPUNIT_ASSERT(!rule->IsSource(source_otherRule_Node));
+    CPPUNIT_ASSERT(!rule->IsSource(source_otherPurpose_Node));
+
+
+    CPPUNIT_ASSERT(!abstractRule->IsSource(unRelated));
+    CPPUNIT_ASSERT(!abstractRule->IsSource(source_implicit_1));
+    CPPUNIT_ASSERT(abstractRule->IsSource(source_data_1));
+    CPPUNIT_ASSERT(abstractRule->IsSource(source_idOnly_1));
+    CPPUNIT_ASSERT(abstractRule->IsSource(source_1));
+
+    CPPUNIT_ASSERT(!abstractRule->IsSource(source_otherRule));
+    CPPUNIT_ASSERT(abstractRule->IsSource(source_otherPurpose));
+
+    CPPUNIT_ASSERT(!abstractRule->IsSource(unRelated_Node));
+    CPPUNIT_ASSERT(!abstractRule->IsSource(source_implicit_1_Node));
+    CPPUNIT_ASSERT(abstractRule->IsSource(source_data_1_Node));
+    CPPUNIT_ASSERT(abstractRule->IsSource(source_idOnly_1_Node));
+    CPPUNIT_ASSERT(abstractRule->IsSource(source_1_Node));
+
+    CPPUNIT_ASSERT(!abstractRule->IsSource(source_otherRule_Node));
+    CPPUNIT_ASSERT(abstractRule->IsSource(source_otherPurpose_Node));
+  }
+
+  void HasRelation()
+  {
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (source is nullptr) does not throw.",
+                                 rule->HasRelation(nullptr, dest_1),
+                                 itk::ExceptionObject);
+
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (destination is nullptr) does not throw.",
+                                 rule->HasRelation(source_1, nullptr),
+                                 itk::ExceptionObject);
+
+    CPPUNIT_ASSERT(rule->HasRelation(source_1, unRelated) == mitk::PropertyRelationRuleBase::RelationType::None);
+    CPPUNIT_ASSERT(rule->HasRelation(unRelated, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
+    CPPUNIT_ASSERT(rule->HasRelation(source_otherRule, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
+    CPPUNIT_ASSERT(rule->HasRelation(source_otherPurpose, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
+
+    CPPUNIT_ASSERT(rule->HasRelation(source_implicit_1, dest_1) ==
+                   mitk::PropertyRelationRuleBase::RelationType::Implicit_Data);
+    CPPUNIT_ASSERT(rule->HasRelation(source_data_1, dest_1) ==
+                   mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
+    CPPUNIT_ASSERT(rule->HasRelation(source_idOnly_1, dest_1) ==
+                   mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+    CPPUNIT_ASSERT(rule->HasRelation(source_1, dest_1) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+
+    CPPUNIT_ASSERT(rule->HasRelation(source_1, dest_2) == mitk::PropertyRelationRuleBase::RelationType::None);
+
+
+    CPPUNIT_ASSERT(abstractRule->HasRelation(source_1, unRelated) == mitk::PropertyRelationRuleBase::RelationType::None);
+    CPPUNIT_ASSERT(abstractRule->HasRelation(unRelated, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
+    CPPUNIT_ASSERT(abstractRule->HasRelation(source_otherRule, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
+    CPPUNIT_ASSERT(abstractRule->HasRelation(source_otherPurpose, dest_1) ==
+      mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+
+    CPPUNIT_ASSERT(abstractRule->HasRelation(source_implicit_1, dest_1) ==
+      mitk::PropertyRelationRuleBase::RelationType::Implicit_Data);
+    CPPUNIT_ASSERT(abstractRule->HasRelation(source_data_1, dest_1) ==
+      mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
+    CPPUNIT_ASSERT(abstractRule->HasRelation(source_idOnly_1, dest_1) ==
+      mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+    CPPUNIT_ASSERT(abstractRule->HasRelation(source_1, dest_1) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+
+    CPPUNIT_ASSERT(abstractRule->HasRelation(source_1, dest_2) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+  }
+
+  void GetExistingRelations()
+  {
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (source is nullptr) does not throw.",
+                                 rule->GetExistingRelations(nullptr),
+                                 itk::ExceptionObject);
+
+    CPPUNIT_ASSERT(rule->GetExistingRelations(unRelated).empty());
+    CPPUNIT_ASSERT(rule->GetExistingRelations(source_otherRule).empty());
+    CPPUNIT_ASSERT(rule->GetExistingRelations(source_otherPurpose).empty());
+    CPPUNIT_ASSERT(rule->GetExistingRelations(source_implicit_1).empty());
+
+    auto uids = rule->GetExistingRelations(source_idOnly_1);
+    CPPUNIT_ASSERT(uids.size() == 1);
+    CPPUNIT_ASSERT(uids.front() == "uid1");
+
+    uids = rule->GetExistingRelations(source_data_1);
+    CPPUNIT_ASSERT(uids.size() == 1);
+    CPPUNIT_ASSERT(uids.front() == "uid2");
+
+    uids = rule->GetExistingRelations(source_1);
+    CPPUNIT_ASSERT(uids.size() == 1);
+    CPPUNIT_ASSERT(uids.front() == "uid3");
+
+
+    CPPUNIT_ASSERT(abstractRule->GetExistingRelations(unRelated).empty());
+    CPPUNIT_ASSERT(abstractRule->GetExistingRelations(source_otherRule).empty());
+    CPPUNIT_ASSERT(abstractRule->GetExistingRelations(source_implicit_1).empty());
+
+    uids = abstractRule->GetExistingRelations(source_idOnly_1);
+    CPPUNIT_ASSERT(uids.size() == 1);
+    CPPUNIT_ASSERT(uids.front() == "uid1");
+
+    uids = abstractRule->GetExistingRelations(source_data_1);
+    CPPUNIT_ASSERT(uids.size() == 2);
+    CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid2") != uids.end());
+    CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid10") != uids.end());
+
+    uids = abstractRule->GetExistingRelations(source_1);
+    CPPUNIT_ASSERT(uids.size() == 2);
+    CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid3") != uids.end());
+    CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid8") != uids.end());
+
+    uids = abstractRule->GetExistingRelations(source_otherPurpose);
+    CPPUNIT_ASSERT(uids.size() == 1);
+    CPPUNIT_ASSERT(uids.front() == "uid9");
+  }
+
+  void GetRelationUIDs()
+  {
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (source is nullptr) does not throw.",
+                                 rule->GetRelationUIDs(nullptr, dest_1),
+                                 itk::ExceptionObject);
+
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (destination is nullptr) does not throw.",
+                                 rule->GetRelationUIDs(source_1, nullptr),
+                                 itk::ExceptionObject);
+
+    CPPUNIT_ASSERT(rule->GetRelationUIDs(source_1, unRelated).empty());
+    CPPUNIT_ASSERT(rule->GetRelationUIDs(source_1, dest_2).empty());
+    CPPUNIT_ASSERT(rule->GetRelationUIDs(unRelated, dest_1).empty());
+    CPPUNIT_ASSERT(rule->GetRelationUIDs(source_otherRule, dest_1).empty());
+    CPPUNIT_ASSERT(rule->GetRelationUIDs(source_otherPurpose, dest_1).empty());
+
+    CPPUNIT_ASSERT(rule->GetRelationUIDs(source_idOnly_1, dest_1).front() == "uid1");
+    CPPUNIT_ASSERT(rule->GetRelationUIDs(source_data_1, dest_1).front() == "uid2");
+    auto uids = rule->GetRelationUIDs(source_1, dest_1);
+    CPPUNIT_ASSERT(uids.size() == 1);
+    CPPUNIT_ASSERT(uids.front() == "uid3");
+
+    CPPUNIT_ASSERT(abstractRule->GetRelationUIDs(source_1, unRelated).empty());
+    CPPUNIT_ASSERT(abstractRule->GetRelationUIDs(unRelated, dest_1).empty());
+    CPPUNIT_ASSERT(abstractRule->GetRelationUIDs(source_otherRule, dest_1).empty());
+    CPPUNIT_ASSERT(abstractRule->GetRelationUIDs(source_otherPurpose, dest_1).front() == "uid9");
+
+    CPPUNIT_ASSERT(abstractRule->GetRelationUIDs(source_idOnly_1, dest_1).front() == "uid1");
+    uids = abstractRule->GetRelationUIDs(source_data_1, dest_1);
+    CPPUNIT_ASSERT(uids.size() == 1);
+    CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid2") != uids.end());
+    uids = abstractRule->GetRelationUIDs(source_1, dest_1);
+    CPPUNIT_ASSERT(uids.size() == 1);
+    CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid3") != uids.end());
+    uids = abstractRule->GetRelationUIDs(source_1, dest_2);
+    CPPUNIT_ASSERT(uids.size() == 1);
+    CPPUNIT_ASSERT(std::find(uids.begin(), uids.end(), "uid8") != uids.end());
+  }
+
+  void GetSourceCandidateIndicator()
+  {
+    auto predicate = rule->GetSourceCandidateIndicator();
+
+    CPPUNIT_ASSERT(predicate->CheckNode(mitk::DataNode::New()));
+    CPPUNIT_ASSERT(!predicate->CheckNode(nullptr));
+  }
+
+  void GetDestinationCandidateIndicator()
+  {
+    auto predicate = rule->GetDestinationCandidateIndicator();
+
+    CPPUNIT_ASSERT(predicate->CheckNode(this->dest_1_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(mitk::DataNode::New()));
+    CPPUNIT_ASSERT(!predicate->CheckNode(nullptr));
+  }
+
+  void GetConnectedSourcesDetector()
+  {
+    auto predicate = rule->GetConnectedSourcesDetector();
+
+    CPPUNIT_ASSERT(!predicate->CheckNode(nullptr));
+    CPPUNIT_ASSERT(!predicate->CheckNode(unRelated_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_implicit_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_data_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_idOnly_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_1_Node));
+
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_otherRule_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_otherPurpose_Node));
+
+
+    auto predicate2 = abstractRule->GetConnectedSourcesDetector();
+
+    CPPUNIT_ASSERT(!predicate2->CheckNode(nullptr));
+    CPPUNIT_ASSERT(!predicate2->CheckNode(unRelated_Node));
+    CPPUNIT_ASSERT(!predicate2->CheckNode(source_implicit_1_Node));
+    CPPUNIT_ASSERT(predicate2->CheckNode(source_data_1_Node));
+    CPPUNIT_ASSERT(predicate2->CheckNode(source_idOnly_1_Node));
+    CPPUNIT_ASSERT(predicate2->CheckNode(source_1_Node));
+
+    CPPUNIT_ASSERT(!predicate2->CheckNode(source_otherRule_Node));
+    CPPUNIT_ASSERT(predicate2->CheckNode(source_otherPurpose_Node));
+  }
+
+  void GetSourcesDetector()
+  {
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (destination is nullptr) does not throw.",
+                                 rule->GetSourcesDetector(nullptr),
+                                 itk::ExceptionObject);
+
+    auto predicate = rule->GetSourcesDetector(dest_1);
+
+    CPPUNIT_ASSERT(!predicate->CheckNode(unRelated_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_otherRule_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_otherPurpose_Node));
+
+    CPPUNIT_ASSERT(predicate->CheckNode(source_implicit_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_data_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_idOnly_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_1_Node));
+
+    predicate = rule->GetSourcesDetector(dest_1, mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
+
+    CPPUNIT_ASSERT(!predicate->CheckNode(unRelated_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_otherRule_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_otherPurpose_Node));
+
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_implicit_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_data_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_idOnly_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_1_Node));
+
+    predicate = rule->GetSourcesDetector(dest_1, mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+
+    CPPUNIT_ASSERT(!predicate->CheckNode(unRelated_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_otherRule_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_otherPurpose_Node));
+
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_implicit_1_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_data_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_idOnly_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_1_Node));
+
+    predicate = rule->GetSourcesDetector(dest_2, mitk::PropertyRelationRuleBase::RelationType::Implicit_Data);
+
+    CPPUNIT_ASSERT(!predicate->CheckNode(unRelated_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_otherRule_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_otherPurpose_Node));
+
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_implicit_1_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_data_1_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_idOnly_1_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_1_Node));
+
+    predicate = abstractRule->GetSourcesDetector(dest_1, mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+
+    CPPUNIT_ASSERT(!predicate->CheckNode(unRelated_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_otherRule_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_otherPurpose_Node));
+
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_implicit_1_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_data_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_idOnly_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_1_Node));
+
+    predicate = abstractRule->GetSourcesDetector(dest_1);
+
+    CPPUNIT_ASSERT(!predicate->CheckNode(unRelated_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(source_otherRule_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_otherPurpose_Node));
+
+    CPPUNIT_ASSERT(predicate->CheckNode(source_implicit_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_data_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_idOnly_1_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(source_1_Node));
+  }
+
+  void GetDestinationsDetector()
+  {
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (source is nullptr) does not throw.",
+                                 rule->GetDestinationsDetector(nullptr),
+                                 itk::ExceptionObject);
+
+    auto predicate = rule->GetDestinationsDetector(source_otherRule);
+    CPPUNIT_ASSERT(!predicate->CheckNode(dest_1_Node));
+
+    predicate = rule->GetDestinationsDetector(source_otherPurpose);
+    CPPUNIT_ASSERT(!predicate->CheckNode(dest_1_Node));
+
+    predicate = rule->GetDestinationsDetector(source_implicit_1);
+    CPPUNIT_ASSERT(predicate->CheckNode(dest_1_Node));
+    predicate =
+      rule->GetDestinationsDetector(source_implicit_1, mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
+    CPPUNIT_ASSERT(!predicate->CheckNode(dest_1_Node));
+
+    predicate = rule->GetDestinationsDetector(source_data_1);
+    CPPUNIT_ASSERT(predicate->CheckNode(dest_1_Node));
+    predicate =
+      rule->GetDestinationsDetector(source_data_1, mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
+    CPPUNIT_ASSERT(predicate->CheckNode(dest_1_Node));
+    predicate =
+      rule->GetDestinationsDetector(source_data_1, mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+    CPPUNIT_ASSERT(!predicate->CheckNode(dest_1_Node));
+
+    predicate = rule->GetDestinationsDetector(source_idOnly_1);
+    CPPUNIT_ASSERT(predicate->CheckNode(dest_1_Node));
+    predicate =
+      rule->GetDestinationsDetector(source_idOnly_1, mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
+    CPPUNIT_ASSERT(predicate->CheckNode(dest_1_Node));
+    predicate =
+      rule->GetDestinationsDetector(source_idOnly_1, mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+    CPPUNIT_ASSERT(predicate->CheckNode(dest_1_Node));
+
+    predicate = rule->GetDestinationsDetector(source_1);
+    CPPUNIT_ASSERT(predicate->CheckNode(dest_1_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(unRelated_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(dest_2_Node));
+    predicate =
+      rule->GetDestinationsDetector(source_1, mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
+    CPPUNIT_ASSERT(predicate->CheckNode(dest_1_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(unRelated_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(dest_2_Node));
+    predicate =
+      rule->GetDestinationsDetector(source_1, mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+    CPPUNIT_ASSERT(predicate->CheckNode(dest_1_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(unRelated_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(dest_2_Node));
+
+    predicate = abstractRule->GetDestinationsDetector(source_otherPurpose);
+    CPPUNIT_ASSERT(predicate->CheckNode(dest_1_Node));
+    predicate = abstractRule->GetDestinationsDetector(source_otherPurpose);
+    CPPUNIT_ASSERT(predicate->CheckNode(dest_1_Node));
+  }
+
+  void GetDestinationDetector()
+  {
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (source is nullptr) does not throw.",
+                                 rule->GetDestinationDetector(nullptr, "uid1"),
+                                 itk::ExceptionObject);
+
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (relation uid is invalid) does not throw.",
+                                 rule->GetDestinationDetector(source_1, "invalid uid"),
+                                 itk::ExceptionObject);
+
+    auto predicate = rule->GetDestinationDetector(source_1, "uid3");
+    CPPUNIT_ASSERT(!predicate->CheckNode(unRelated_Node));
+    CPPUNIT_ASSERT(predicate->CheckNode(dest_1_Node));
+    CPPUNIT_ASSERT(!predicate->CheckNode(dest_2_Node));
+  }
+
+  void Connect()
+  {
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (source is nullptr) does not throw.",
+                                 rule->Connect(nullptr, dest_1),
+                                 itk::ExceptionObject);
+
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (destination is nullptr) does not throw.",
+                                 rule->Connect(source_1, nullptr),
+                                 itk::ExceptionObject);
+
+    // check upgrade of an implicit connection
+    CPPUNIT_ASSERT(rule->HasRelation(source_implicit_1, dest_1) ==
+                   mitk::PropertyRelationRuleBase::RelationType::Implicit_Data);
+    rule->Connect(source_implicit_1, dest_1);
+    CPPUNIT_ASSERT(rule->HasRelation(source_implicit_1, dest_1) ==
+                   mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+    auto dcmRefs = GetReferenceSequenceIndices(source_implicit_1, dest_1);
+    CPPUNIT_ASSERT_MESSAGE("Additional dicom reference was defined instead of using the existing one.", dcmRefs.size() == 1);
+    CPPUNIT_ASSERT_MESSAGE("Dicom reference is not correct.", IsCorrectDICOMReference(source_implicit_1, "dest_1", "image", "Test", 0));
+
+    // check upgrade and reuse of an data connection (no new relation should be generated).
+    CPPUNIT_ASSERT(rule->HasRelation(source_data_1, dest_1) ==
+                   mitk::PropertyRelationRuleBase::RelationType::Connected_Data);
+    rule->Connect(source_data_1, dest_1);
+    CPPUNIT_ASSERT(rule->HasRelation(source_data_1, dest_1) ==
+                   mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+
+    auto relUID = rule->GetRelationUIDs(source_data_1, dest_1);
+    CPPUNIT_ASSERT(relUID.size() == 1);
+
+    std::string name = "MITK.Relations.1.destinationUID";
+    auto prop = source_data_1->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE(
+      "Destination uid was not stored with the correct key. Already existing session should be used.", prop);
+    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was stored.", prop->GetValueAsString() == dest_1->GetUID());
+    
+    name = "MITK.Relations.1.ruleID";
+    prop = source_data_1->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect ruleID was stored.", prop->GetValueAsString() == rule->GetRuleID());
+
+    name = "MITK.Relations.1.SourceImageSequenceItem";
+    prop = source_data_1->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was stored.", prop->GetValueAsString() == "0");
+
+    dcmRefs = GetReferenceSequenceIndices(source_data_1, dest_1);
+    CPPUNIT_ASSERT_MESSAGE("Additional dicom reference was defined instead of using the existing one.", dcmRefs.size() == 1);
+    CPPUNIT_ASSERT_MESSAGE("Dicom reference is not correct.", IsCorrectDICOMReference(source_data_1, "dest_1", "image", "Test", 0));
+
+    // check actualization of an id only connection
+    rule->Connect(source_idOnly_1, dest_1);
+    CPPUNIT_ASSERT(rule->HasRelation(source_idOnly_1, dest_1) ==
+                   mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+    CPPUNIT_ASSERT_MESSAGE("Additional relation was defined instead of updating exting one.",
+                           rule->GetExistingRelations(source_1).size() == 1);
+
+    // check actualization of an existing connection
+    rule->Connect(source_1, dest_1);
+    CPPUNIT_ASSERT(rule->HasRelation(source_1, dest_1) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+    CPPUNIT_ASSERT_MESSAGE("Additional relation was defined instead of updating exting one.",
+                           rule->GetExistingRelations(source_1).size() == 1);
+    name = "MITK.Relations.1.destinationUID";
+    prop = source_1->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE(
+      "Destination uid was not stored with the correct key. Already existing session should be used.", prop);
+    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was stored.", prop->GetValueAsString() == dest_1->GetUID());
+
+    name = "MITK.Relations.1.ruleID";
+    prop = source_1->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect ruleID was stored.", prop->GetValueAsString() == rule->GetRuleID());
+
+    name = "MITK.Relations.1.SourceImageSequenceItem";
+    prop = source_1->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was stored.", prop->GetValueAsString() == "0");
+
+    dcmRefs = GetReferenceSequenceIndices(source_1, dest_1);
+    CPPUNIT_ASSERT_MESSAGE("Additional dicom reference was defined instead of using the existing one.", dcmRefs.size() == 1);
+    CPPUNIT_ASSERT_MESSAGE("Dicom reference is not correct.", IsCorrectDICOMReference(source_1, "dest_1", "image", "Test", 0));
+
+    // check creation of an new connection
+    rule->Connect(unRelated, dest_1);
+    CPPUNIT_ASSERT(rule->HasRelation(unRelated, dest_1) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+    CPPUNIT_ASSERT_MESSAGE("Relation was not defined instead of updating exting one.",
+      rule->GetExistingRelations(unRelated).size() == 1);
+    name = "MITK.Relations.1.destinationUID";
+    prop = unRelated->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was stored.", prop->GetValueAsString() == dest_1->GetUID());
+
+    name = "MITK.Relations.1.ruleID";
+    prop = unRelated->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect ruleID was stored.", prop->GetValueAsString() == rule->GetRuleID());
+
+    name = "MITK.Relations.1.SourceImageSequenceItem";
+    prop = unRelated->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was stored.", prop->GetValueAsString() == "0");
+
+    dcmRefs = GetReferenceSequenceIndices(unRelated, dest_1);
+    CPPUNIT_ASSERT_MESSAGE("Additional dicom reference was defined instead of using the existing one.", dcmRefs.size() == 1);
+    CPPUNIT_ASSERT_MESSAGE("Dicom reference squence is corrupted. Should be just an index 0.", dcmRefs[0] == "0");
+    CPPUNIT_ASSERT_MESSAGE("Dicom reference is not correct.", IsCorrectDICOMReference(unRelated, "dest_1", "image", "Test", 0));
+
+    // check creation of a 2nd connection of the same purpose
+    rule->Connect(unRelated, dest_2);
+    CPPUNIT_ASSERT(rule->HasRelation(unRelated, dest_2) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+    CPPUNIT_ASSERT_MESSAGE("Additional relation was not defined.",
+      rule->GetExistingRelations(unRelated).size() == 2);
+    name = "MITK.Relations.1.destinationUID";
+    prop = unRelated->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was stored.", prop->GetValueAsString() == dest_1->GetUID());
+
+    name = "MITK.Relations.1.ruleID";
+    prop = unRelated->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect ruleID was stored.", prop->GetValueAsString() == rule->GetRuleID());
+
+    name = "MITK.Relations.1.SourceImageSequenceItem";
+    prop = unRelated->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was stored.", prop->GetValueAsString() == "0");
+
+    name = "MITK.Relations.2.destinationUID";
+    prop = unRelated->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was stored.", prop->GetValueAsString() == dest_2->GetUID());
+
+    name = "MITK.Relations.2.ruleID";
+    prop = unRelated->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect ruleID was stored.", prop->GetValueAsString() == rule->GetRuleID());
+
+    name = "MITK.Relations.2.SourceImageSequenceItem";
+    prop = unRelated->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was stored.", prop->GetValueAsString() == "1");
+
+
+    dcmRefs = GetReferenceSequenceIndices(unRelated, dest_2);
+    CPPUNIT_ASSERT_MESSAGE("Additional dicom reference was not defined.", dcmRefs.size() == 1);
+    CPPUNIT_ASSERT_MESSAGE("Dicom reference is not correct.", IsCorrectDICOMReference(unRelated, "dest_1", "image", "Test", 0));
+    CPPUNIT_ASSERT_MESSAGE("Dicom reference is not correct.", IsCorrectDICOMReference(unRelated, "dest_2", "image", "Test", 1));
+  }
+
+  void Disconnect()
+  {
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (source is nullptr) does not throw.",
+                                 rule->Disconnect(nullptr, dest_1),
+                                 itk::ExceptionObject);
+
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (destination is nullptr) does not throw.",
+                                 rule->Disconnect(source_1, nullptr),
+                                 itk::ExceptionObject);
+
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (destination is nullptr) does not throw.",
+                                 rule->Disconnect(nullptr, "uid"),
+                                 itk::ExceptionObject);
+
+    CPPUNIT_ASSERT(rule->HasRelation(source_1, unRelated) == mitk::PropertyRelationRuleBase::RelationType::None);
+    rule->Disconnect(source_1, unRelated);
+    CPPUNIT_ASSERT(rule->HasRelation(source_1, unRelated) == mitk::PropertyRelationRuleBase::RelationType::None);
+    CPPUNIT_ASSERT_MESSAGE("Other relationdata property was removed.", IsCorrectDICOMReference(source_1, "dest_1", "image", "Test", 0));
+
+    //check if index correction is correct, when disconnecting
+    rule->Connect(source_1, dest_2);
+    rule->Connect(source_1, unRelated);
+    rule->Disconnect(source_1, dest_2);
+    CPPUNIT_ASSERT(rule->HasRelation(source_1, dest_2) == mitk::PropertyRelationRuleBase::RelationType::None);
+    CPPUNIT_ASSERT(this->hasRelationProperties(source_1, "1"));
+    CPPUNIT_ASSERT(this->hasRelationProperties(source_1, "2"));
+    CPPUNIT_ASSERT(!this->hasRelationProperties(source_1, "3"));
+    CPPUNIT_ASSERT(this->hasRelationProperties(source_1, "4"));
+    CPPUNIT_ASSERT_MESSAGE("Dicom reference to dest_1 has been removed.", IsCorrectDICOMReference(source_1, "dest_1", "image", "Test", 0));
+    CPPUNIT_ASSERT_MESSAGE("Dicom reference to dest_2 (other purpose) has been removed or has not a corrected sequence index (1 instead of 2).", IsCorrectDICOMReference(source_1, "dest_2", "image", "otherpurpose", 1));
+    CPPUNIT_ASSERT_MESSAGE("Dicom reference to unRelated has been removed or has not a corrected sequence index (1 instead of 2).", IsCorrectDICOMReference(source_1, "unRelated", "image", "Test", 2));
+
+    std::string name = "MITK.Relations.4.destinationUID";
+    auto prop = source_1->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE(
+      "Destination uid was not stored with the correct key. Already existing session should be used.", prop);
+    CPPUNIT_ASSERT_MESSAGE("Incorrect destination uid was stored.", prop->GetValueAsString() == unRelated->GetUID());
+    name = "MITK.Relations.4.SourceImageSequenceItem";
+    prop = source_1->GetProperty(name.c_str());
+    CPPUNIT_ASSERT_MESSAGE("SourceImageSequenceItem was not actualized correctly.", prop->GetValueAsString() == "2");
+
+    rule->Disconnect(source_otherPurpose, dest_1);
+    CPPUNIT_ASSERT_MESSAGE("Data of other rule purpose was removed.", this->hasRelationProperties(source_otherPurpose, "1"));
+  }
+
+  void Connect_abstract()
+  {
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (abstract does not connect) does not throw.",
+      abstractRule->Connect(nullptr, dest_1),
+      itk::ExceptionObject);
+
+    CPPUNIT_ASSERT_THROW_MESSAGE("Violated precondition (abstract does not connect) does not throw.",
+      abstractRule->Connect(source_1, nullptr),
+      itk::ExceptionObject);
+  }
+
+  void Disconnect_abstract()
+  {
+
+    CPPUNIT_ASSERT(abstractRule->HasRelation(source_1, dest_2) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+    abstractRule->Disconnect(source_1, dest_2);
+    CPPUNIT_ASSERT(abstractRule->HasRelation(source_1, dest_2) == mitk::PropertyRelationRuleBase::RelationType::None);
+    CPPUNIT_ASSERT(!this->hasRelationProperties(source_1, "2"));
+
+    CPPUNIT_ASSERT(abstractRule->HasRelation(source_1, dest_1) == mitk::PropertyRelationRuleBase::RelationType::Connected_ID);
+    abstractRule->Disconnect(source_1, dest_1);
+    CPPUNIT_ASSERT(abstractRule->HasRelation(source_1, dest_1) == mitk::PropertyRelationRuleBase::RelationType::None);
+    CPPUNIT_ASSERT(!this->hasRelationProperties(source_1, "1"));
+
+    abstractRule->Disconnect(source_otherPurpose, dest_1);
+    CPPUNIT_ASSERT_MESSAGE("Data of other rule type was removed.", !this->hasRelationProperties(source_otherPurpose, "1"));
+  }
+
+};
+
+MITK_TEST_SUITE_REGISTRATION(mitkSourceImageRelationRule)