diff --git a/Modules/ImageStatistics/mitkImageStatisticsContainerManager.h b/Modules/ImageStatistics/mitkImageStatisticsContainerManager.h
index 5d86be4e3f..c3f9687e9b 100644
--- a/Modules/ImageStatistics/mitkImageStatisticsContainerManager.h
+++ b/Modules/ImageStatistics/mitkImageStatisticsContainerManager.h
@@ -1,56 +1,70 @@
 /*===================================================================
 
 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 QmitkImageStatisticsContainerManager_H__INCLUDED
 #define QmitkImageStatisticsContainerManager_H__INCLUDED
 
 #include "MitkImageStatisticsExports.h"
 
 #include <mitkDataStorage.h>
 #include <mitkImageStatisticsContainer.h>
 #include <mitkBaseData.h>
 #include <mitkNodePredicateBase.h>
 #include <mitkGenericIDRelationRule.h>
 #include <mitkPropertyRelations.h>
 
 /**
-\brief Returns the image statistic to the given input
-\details
+\brief Returns the StatisticsContainer that was computed on given input (image/mask/planar figure) and is added as DataNode in a DataStorage
 
 */
 namespace mitk
 {
   class MITKIMAGESTATISTICS_EXPORT ImageStatisticsContainerManager : public itk::Object
   {
   public:
     mitkClassMacroItkParent(ImageStatisticsContainerManager, itk::Object)
     itkNewMacro(Self)
 
+    /**Documentation
+    @brief Set the data storage
+    @pre data storage must be valid
+    */
     void SetDataStorage(mitk::DataStorage::Pointer dataStorage);
+
+    /**Documentation
+    @brief Set the rules for the relation statisticsContainer to image and mask
+    @details The RuleResultVectorType defines rules for one statisticsContainer to an image and [optionally
+    a mask]*/
     void SetRules(const std::vector<mitk::PropertyRelations::RuleResultVectorType>& rules);
 
+    /**Documentation
+    @brief Returns the StatisticContainer for the given image and mask
+    @return a valid StatisticsContainer or nullptr if no StatisticContainer is found or no rules have been defined
+    @details if more than one StatisticsContainer is found, only the newest (ModifiedTime) is returned
+    @exception if DataStorage is nullptr
+    */
     mitk::StatisticsContainer::ConstPointer GetImageStatistics(mitk::BaseData::ConstPointer image, mitk::BaseData::ConstPointer mask=nullptr) const;
 
   protected:
     ImageStatisticsContainerManager();
 
   private:
     mitk::NodePredicateBase::ConstPointer GetPredicateForSources(const mitk::PropertyRelations::RuleResultVectorType& rules, mitk::BaseData::ConstPointer image, mitk::BaseData::ConstPointer mask = nullptr) const;
 
     mitk::DataStorage::Pointer m_DataStorage = nullptr;
     std::vector<mitk::PropertyRelations::RuleResultVectorType> m_ImageStatisticRules;
   };
 }
 #endif