diff --git a/Modules/DICOMReader/mitkDICOMGDCMImageFrameInfo.cpp b/Modules/DICOMReader/mitkDICOMGDCMImageFrameInfo.cpp
index 3ad71934c2..8826234c1e 100644
--- a/Modules/DICOMReader/mitkDICOMGDCMImageFrameInfo.cpp
+++ b/Modules/DICOMReader/mitkDICOMGDCMImageFrameInfo.cpp
@@ -1,112 +1,112 @@
 /*===================================================================
 
   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 "mitkDICOMGDCMImageFrameInfo.h"
 
 mitk::DICOMGDCMImageFrameInfo
 ::DICOMGDCMImageFrameInfo(const std::string& filename, unsigned int frameNo)
 :itk::LightObject()
 ,m_FrameInfo( DICOMImageFrameInfo::New(filename, frameNo) )
-,m_TagForValue(gdcm::Scanner::TagToValue()) // empty
+,m_TagForValue()
 {
 }
 
 mitk::DICOMGDCMImageFrameInfo
 ::DICOMGDCMImageFrameInfo(DICOMImageFrameInfo::Pointer frameinfo)
 :itk::LightObject()
 ,m_FrameInfo(frameinfo)
-,m_TagForValue(gdcm::Scanner::TagToValue()) // empty
+,m_TagForValue()
 {
 }
 
 mitk::DICOMGDCMImageFrameInfo
 ::DICOMGDCMImageFrameInfo(DICOMImageFrameInfo::Pointer frameinfo, gdcm::Scanner::TagToValue const& tagToValueMapping)
 :itk::LightObject()
 ,m_FrameInfo(frameinfo)
 ,m_TagForValue(tagToValueMapping)
 {
 }
 
 mitk::DICOMGDCMImageFrameInfo::
 ~DICOMGDCMImageFrameInfo()
 {
 }
 
 std::string
 mitk::DICOMGDCMImageFrameInfo
 ::GetTagValueAsString(const DICOMTag& tag) const
 {
   gdcm::Scanner::TagToValue::const_iterator mappedValue = m_TagForValue.find( gdcm::Tag(tag.GetGroup(), tag.GetElement()) );
 
   if (mappedValue != m_TagForValue.end())
   {
     if (mappedValue->second != NULL)
     {
       std::string s(mappedValue->second);
       return s.erase(s.find_last_not_of(" \n\r\t")+1);
     }
     else
     {
       return std::string("");
     }
   }
   else
   {
     const DICOMTag tagImagePositionPatient = DICOMTag(0x0020,0x0032); // Image Position (Patient)
     const DICOMTag    tagImageOrientation = DICOMTag(0x0020, 0x0037); // Image Orientation
 
     if (tag == tagImagePositionPatient)
     {
       return std::string("0\\0\\0");
     }
     else if (tag == tagImageOrientation)
     {
       return std::string("1\\0\\0\\0\\1\\0");
     }
     else
     {
       return std::string("");
     }
   }
 }
 
 std::string
 mitk::DICOMGDCMImageFrameInfo
 ::GetFilenameIfAvailable() const
 {
   if (m_FrameInfo.IsNotNull())
   {
     return m_FrameInfo->Filename;
   }
   else
   {
     return std::string("");
   }
 }
 
 mitk::DICOMImageFrameInfo::Pointer
 mitk::DICOMGDCMImageFrameInfo
 ::GetFrameInfo() const
 {
   return m_FrameInfo;
 }
 
 void
   mitk::DICOMGDCMImageFrameInfo
 ::SetFrameInfo(DICOMImageFrameInfo::Pointer frameinfo)
 {
   m_FrameInfo = frameinfo;
 }
diff --git a/Modules/DICOMReader/mitkDICOMGDCMImageFrameInfo.h b/Modules/DICOMReader/mitkDICOMGDCMImageFrameInfo.h
index de13c2a355..8a1be2940f 100644
--- a/Modules/DICOMReader/mitkDICOMGDCMImageFrameInfo.h
+++ b/Modules/DICOMReader/mitkDICOMGDCMImageFrameInfo.h
@@ -1,71 +1,71 @@
 /*===================================================================
 
 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 mitkDICOMGDCMImageFrameInfo_h
 #define mitkDICOMGDCMImageFrameInfo_h
 
 #include "mitkDICOMImageFrameInfo.h"
 #include "mitkDICOMDatasetAccess.h"
 
 #include "gdcmScanner.h"
 
 namespace mitk
 {
   /**
     \ingroup DICOMReaderModule
     \brief The dataset access implementation for DICOMITKSeriesGDCMReader, based on GDCM.
 
     This class combines a DICOMImageFrameInfo object with the scanning results
     from gdcm::Scanner. The scanning results will be used to implement the tag
     access methods of DICOMDatasetAccess.
   */
   class DICOMReader_EXPORT DICOMGDCMImageFrameInfo : public itk::LightObject, public DICOMDatasetAccess
   {
     public:
 
       mitkClassMacro(DICOMGDCMImageFrameInfo, itk::LightObject);
       itkNewMacro( DICOMGDCMImageFrameInfo );
       mitkNewMacro1Param( DICOMGDCMImageFrameInfo, const std::string&);
       mitkNewMacro2Param( DICOMGDCMImageFrameInfo, const std::string&, unsigned int );
       mitkNewMacro1Param( DICOMGDCMImageFrameInfo, DICOMImageFrameInfo::Pointer);
       mitkNewMacro2Param( DICOMGDCMImageFrameInfo, DICOMImageFrameInfo::Pointer, gdcm::Scanner::TagToValue const&);
 
       virtual ~DICOMGDCMImageFrameInfo();
 
       virtual std::string GetTagValueAsString(const DICOMTag&) const;
 
       std::string GetFilenameIfAvailable() const;
 
       /// The frame that this objects refers to
       DICOMImageFrameInfo::Pointer GetFrameInfo() const;
       /// The frame that this objects refers to
       void SetFrameInfo(DICOMImageFrameInfo::Pointer frameinfo);
 
     protected:
 
       DICOMImageFrameInfo::Pointer m_FrameInfo;
 
       DICOMGDCMImageFrameInfo(DICOMImageFrameInfo::Pointer frameinfo);
       DICOMGDCMImageFrameInfo(DICOMImageFrameInfo::Pointer frameinfo, gdcm::Scanner::TagToValue const& tagToValueMapping);
       DICOMGDCMImageFrameInfo(const std::string& filename = "", unsigned int frameNo = 0);
 
-      gdcm::Scanner::TagToValue const& m_TagForValue;
+      const gdcm::Scanner::TagToValue m_TagForValue;
   };
 
   typedef std::vector<DICOMGDCMImageFrameInfo::Pointer> DICOMGDCMImageFrameList;
 }
 
 #endif
diff --git a/Modules/DICOMReader/mitkDICOMTagBasedSorter.cpp b/Modules/DICOMReader/mitkDICOMTagBasedSorter.cpp
index 185814d2e6..5475550871 100644
--- a/Modules/DICOMReader/mitkDICOMTagBasedSorter.cpp
+++ b/Modules/DICOMReader/mitkDICOMTagBasedSorter.cpp
@@ -1,540 +1,540 @@
 /*===================================================================
 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 "mitkDICOMTagBasedSorter.h"
 
 #include <algorithm>
 #include <iomanip>
 
 mitk::DICOMTagBasedSorter::CutDecimalPlaces
 ::CutDecimalPlaces(unsigned int precision)
 :m_Precision(precision)
 {
 }
 
 mitk::DICOMTagBasedSorter::CutDecimalPlaces
 ::CutDecimalPlaces(const CutDecimalPlaces& other)
 :m_Precision(other.m_Precision)
 {
 }
 
 std::string
 mitk::DICOMTagBasedSorter::CutDecimalPlaces
 ::operator()(const std::string& input) const
 {
   // be a bit tolerant for tags such as image orientation orienatation, let only the first few digits matter (http://bugs.mitk.org/show_bug.cgi?id=12263)
   // iterate all fields, convert each to a number, cut this number as configured, then return a concatenated string with all cut-off numbers
-  static std::ostringstream resultString;
+  std::ostringstream resultString;
   resultString.str(std::string());
   resultString.clear();
   resultString.setf(std::ios::fixed, std::ios::floatfield);
   resultString.precision(m_Precision);
 
-  static std::stringstream ss(input);
+  std::stringstream ss(input);
   ss.str(input);
   ss.clear();
-  static std::string item;
+  std::string item;
+  double number(0);
+  std::istringstream converter(item);
   while (std::getline(ss, item, '\\'))
   {
-    static std::istringstream converter(item);
     converter.str(item);
     converter.clear();
-    static double number(0);
     if (converter >> number && converter.eof())
     {
       // converted to double
       resultString << number;
     }
     else
     {
       // did not convert to double
       resultString << item; // just paste the unmodified string
     }
 
     if (!ss.eof())
     {
       resultString << "\\";
     }
   }
 
   return resultString.str();
 }
 
 mitk::DICOMTagBasedSorter::TagValueProcessor*
 mitk::DICOMTagBasedSorter::CutDecimalPlaces
 ::Clone() const
 {
   return new CutDecimalPlaces(*this);
 }
 
 
 unsigned int
 mitk::DICOMTagBasedSorter::CutDecimalPlaces
 ::GetPrecision() const
 {
   return m_Precision;
 }
 
 mitk::DICOMTagBasedSorter
 ::DICOMTagBasedSorter()
 :DICOMDatasetSorter()
 ,m_StrictSorting(true)
 {
 }
 
 mitk::DICOMTagBasedSorter
 ::~DICOMTagBasedSorter()
 {
   for(TagValueProcessorMap::iterator ti = m_TagValueProcessor.begin();
       ti != m_TagValueProcessor.end();
       ++ti)
   {
     delete ti->second;
   }
 }
 
 mitk::DICOMTagBasedSorter
 ::DICOMTagBasedSorter(const DICOMTagBasedSorter& other )
 :DICOMDatasetSorter(other)
 ,m_DistinguishingTags( other.m_DistinguishingTags )
 ,m_SortCriterion( other.m_SortCriterion )
 ,m_StrictSorting( other.m_StrictSorting )
 {
   for(TagValueProcessorMap::const_iterator ti = other.m_TagValueProcessor.begin();
       ti != other.m_TagValueProcessor.end();
       ++ti)
   {
     m_TagValueProcessor[ti->first] = ti->second->Clone();
   }
 }
 
 mitk::DICOMTagBasedSorter&
 mitk::DICOMTagBasedSorter
 ::operator=(const DICOMTagBasedSorter& other)
 {
   if (this != &other)
   {
     DICOMDatasetSorter::operator=(other);
     m_DistinguishingTags = other.m_DistinguishingTags;
     m_SortCriterion = other.m_SortCriterion;
     m_StrictSorting = other.m_StrictSorting;
 
     for(TagValueProcessorMap::const_iterator ti = other.m_TagValueProcessor.begin();
         ti != other.m_TagValueProcessor.end();
         ++ti)
     {
       m_TagValueProcessor[ti->first] = ti->second->Clone();
     }
   }
   return *this;
 }
 
 bool
 mitk::DICOMTagBasedSorter
 ::operator==(const DICOMDatasetSorter& other) const
 {
   if (const DICOMTagBasedSorter* otherSelf = dynamic_cast<const DICOMTagBasedSorter*>(&other))
   {
     if (this->m_StrictSorting != otherSelf->m_StrictSorting) return false;
 
     bool allTagsPresentAndEqual(true);
     if (this->m_DistinguishingTags.size() != otherSelf->m_DistinguishingTags.size())
       return false;
 
     for (DICOMTagList::const_iterator myTag = this->m_DistinguishingTags.begin();
         myTag != this->m_DistinguishingTags.end();
         ++myTag)
     {
       allTagsPresentAndEqual &= (std::find( otherSelf->m_DistinguishingTags.begin(), otherSelf->m_DistinguishingTags.end(), *myTag )
                                  != otherSelf->m_DistinguishingTags.end()); // other contains this tags
                                              // since size is equal, we don't need to check the inverse
     }
 
     if (!allTagsPresentAndEqual) return false;
 
     if (this->m_SortCriterion.IsNotNull() && otherSelf->m_SortCriterion.IsNotNull())
     {
       return *(this->m_SortCriterion) == *(otherSelf->m_SortCriterion);
     }
     else
     {
       return this->m_SortCriterion.IsNull() && otherSelf->m_SortCriterion.IsNull();
     }
   }
   else
   {
     return false;
   }
 }
 
 void
 mitk::DICOMTagBasedSorter
 ::PrintConfiguration(std::ostream& os, const std::string& indent) const
 {
   os << indent << "Tag based sorting:" << std::endl;
   for (DICOMTagList::const_iterator tagIter = m_DistinguishingTags.begin();
        tagIter != m_DistinguishingTags.end();
        ++tagIter)
   {
     os << indent << "  Split on ";
     tagIter->Print(os);
     os << std::endl;
   }
 
   DICOMSortCriterion::ConstPointer crit = m_SortCriterion.GetPointer();
   while (crit.IsNotNull())
   {
     os << indent << "   Sort by ";
     crit->Print(os);
     os << std::endl;
     crit = crit->GetSecondaryCriterion();
   }
 }
 
 void
 mitk::DICOMTagBasedSorter
 ::SetStrictSorting(bool strict)
 {
   m_StrictSorting = strict;
 }
 
 bool
 mitk::DICOMTagBasedSorter
 ::GetStrictSorting() const
 {
   return m_StrictSorting;
 }
 
 mitk::DICOMTagList
 mitk::DICOMTagBasedSorter
 ::GetTagsOfInterest()
 {
   DICOMTagList allTags = m_DistinguishingTags;
 
   DICOMTagList sortingRelevantTags = m_SortCriterion->GetAllTagsOfInterest();
   allTags.insert( allTags.end(), sortingRelevantTags.begin(), sortingRelevantTags.end() ); // append
 
   return allTags;
 }
 
 mitk::DICOMTagList
 mitk::DICOMTagBasedSorter
 ::GetDistinguishingTags() const
 {
   return m_DistinguishingTags;
 }
 
 const mitk::DICOMTagBasedSorter::TagValueProcessor*
 mitk::DICOMTagBasedSorter
 ::GetTagValueProcessorForDistinguishingTag(const DICOMTag& tag) const
 {
   TagValueProcessorMap::const_iterator loc = m_TagValueProcessor.find(tag);
   if (loc != m_TagValueProcessor.end())
   {
     return loc->second;
   }
   else
   {
     return NULL;
   }
 }
 
 void
 mitk::DICOMTagBasedSorter
 ::AddDistinguishingTag( const DICOMTag& tag, TagValueProcessor* tagValueProcessor )
 {
   m_DistinguishingTags.push_back(tag);
   m_TagValueProcessor[tag] = tagValueProcessor;
 }
 
 void
 mitk::DICOMTagBasedSorter
 ::SetSortCriterion( DICOMSortCriterion::ConstPointer criterion )
 {
   m_SortCriterion = criterion;
 }
 
 mitk::DICOMSortCriterion::ConstPointer
 mitk::DICOMTagBasedSorter
 ::GetSortCriterion() const
 {
   return m_SortCriterion;
 }
 
 void
 mitk::DICOMTagBasedSorter
 ::Sort()
 {
   // 1. split
   // 2. sort each group
   GroupIDToListType groups = this->SplitInputGroups();
   GroupIDToListType& sortedGroups = this->SortGroups( groups );
 
   // 3. define output
   this->SetNumberOfOutputs(sortedGroups.size());
   unsigned int outputIndex(0);
   for (GroupIDToListType::iterator groupIter = sortedGroups.begin();
        groupIter != sortedGroups.end();
        ++outputIndex, ++groupIter)
   {
     this->SetOutput(outputIndex, groupIter->second);
   }
 }
 
 std::string
 mitk::DICOMTagBasedSorter
 ::BuildGroupID( DICOMDatasetAccess* dataset )
 {
   // just concatenate all tag values
   assert(dataset);
   std::stringstream groupID;
   groupID << "g";
   for (DICOMTagList::iterator tagIter = m_DistinguishingTags.begin();
        tagIter != m_DistinguishingTags.end();
        ++tagIter)
   {
     groupID << tagIter->GetGroup() << tagIter->GetElement(); // make group/element part of the id to cover empty tags
     std::string rawTagValue = dataset->GetTagValueAsString(*tagIter);
     std::string processedTagValue;
     if ( m_TagValueProcessor[*tagIter] != NULL )
     {
       processedTagValue = (*m_TagValueProcessor[*tagIter])(rawTagValue);
     }
     else
     {
       processedTagValue = rawTagValue;
     }
     groupID << processedTagValue;
   }
   // shorten ID?
   return groupID.str();
 }
 
 mitk::DICOMTagBasedSorter::GroupIDToListType
 mitk::DICOMTagBasedSorter
 ::SplitInputGroups()
 {
   DICOMDatasetList input = GetInput(); // copy
 
   GroupIDToListType listForGroupID;
 
   for (DICOMDatasetList::iterator dsIter = input.begin();
        dsIter != input.end();
        ++dsIter)
   {
     DICOMDatasetAccess* dataset = *dsIter;
     assert(dataset);
 
     std::string groupID = this->BuildGroupID( dataset );
     MITK_DEBUG << "Group ID for for " << dataset->GetFilenameIfAvailable() << ": " << groupID;
     listForGroupID[groupID].push_back(dataset);
   }
 
   MITK_DEBUG << "After tag based splitting: " << listForGroupID.size() << " groups";
 
   return listForGroupID;
 }
 
 mitk::DICOMTagBasedSorter::GroupIDToListType&
 mitk::DICOMTagBasedSorter
 ::SortGroups(GroupIDToListType& groups)
 {
   if (m_SortCriterion.IsNotNull())
   {
     /*
        Three steps here:
         1. sort within each group
            - this may result in orders such as 1 2 3 4 6 7 8 10 12 13 14
         2. create new groups by enforcing consecutive order within each group
            - resorts above example like 1 2 3 4  ;  6 7 8  ;  10  ;  12 13 14
         3. sort all of the groups (not WITHIN each group) by their first frame
            - if earlier "distinguish" steps created groups like 6 7 8  ;  1 2 3 4  ; 10,
              then this step would sort them like 1 2 3 4  ;  6 7 8  ;  10
     */
 
     // Step 1: sort within the groups
     // for each output
     //   sort by all configured tags, use secondary tags when equal or empty
     //   make configurable:
     //    - sorting order (ascending, descending)
     //    - sort numerically
     //    - ... ?
     unsigned int groupIndex(0);
     for (GroupIDToListType::iterator gIter = groups.begin();
          gIter != groups.end();
          ++groupIndex, ++gIter)
     {
       DICOMDatasetList& dsList = gIter->second;
       MITK_DEBUG << "   --------------------------------------------------------------------------------";
       MITK_DEBUG << "   DICOMTagBasedSorter before sorting group : " << groupIndex;
       for (DICOMDatasetList::iterator oi = dsList.begin();
            oi != dsList.end();
            ++oi)
       {
         MITK_DEBUG << "     INPUT     : " << (*oi)->GetFilenameIfAvailable();
       }
 
       std::sort( dsList.begin(), dsList.end(), ParameterizedDatasetSort( m_SortCriterion ) );
 
       MITK_DEBUG << "   --------------------------------------------------------------------------------";
       MITK_DEBUG << "   DICOMTagBasedSorter after sorting group : " << groupIndex;
       for (DICOMDatasetList::iterator oi = dsList.begin();
            oi != dsList.end();
            ++oi)
       {
         MITK_DEBUG << "     OUTPUT    : " << (*oi)->GetFilenameIfAvailable();
       }
       MITK_DEBUG << "   --------------------------------------------------------------------------------";
     }
 
     GroupIDToListType consecutiveGroups;
     if (m_StrictSorting)
     {
       // Step 2: create new groups by enforcing consecutive order within each group
       unsigned int groupIndex(0);
       for (GroupIDToListType::iterator gIter = groups.begin();
            gIter != groups.end();
            ++gIter)
       {
         std::stringstream groupKey;
         groupKey << std::setfill('0') << std::setw(6) << groupIndex++;
 
         DICOMDatasetList& dsList = gIter->second;
         DICOMDatasetAccess* previousDS(NULL);
         unsigned int dsIndex(0);
         double constantDistance(0.0);
         bool constantDistanceInitialized(false);
         for (DICOMDatasetList::iterator dataset = dsList.begin();
              dataset != dsList.end();
              ++dsIndex, ++dataset)
         {
           if (dsIndex >0) // ignore the first dataset, we cannot check any distances yet..
           {
             // for the second and every following dataset:
             // let the sorting criterion calculate a "distance"
             // if the distance is not 1, split off a new group!
             double currentDistance = m_SortCriterion->NumericDistance(previousDS, *dataset);
             if (constantDistanceInitialized)
             {
               if (fabs(currentDistance - constantDistance) < constantDistance * 0.01) // ok, deviation of up to 1% of distance is tolerated
               {
                 // nothing to do, just ok
               }
               else if (currentDistance < mitk::eps) // close enough to 0
               {
                 // no numeric comparison possible?
                 // rare case(?), just accept
               }
               else
               {
                 // split! this is done by simply creating a new group (key)
                 groupKey.str(std::string());
                 groupKey.clear();
                 groupKey << std::setfill('0') << std::setw(6) << groupIndex++;
               }
             }
             else
             {
               // second slice: learn about the expected distance!
 
               // heuristic: if distance is an integer, we check for a special case:
               //            if the distance is integer and not 1/-1, then we assume
               //            a missing slice right after the first slice
               //            ==> split off slices
               // in all other cases: second dataset at this position, no need to split already, we are still learning about the images
               if ((currentDistance - (int)currentDistance == 0.0) && fabs(currentDistance) != 1.0)
                 // exact comparison. An integer should not be expressed as 1.000000000000000000000000001!
               {
                 groupKey.str(std::string());
                 groupKey.clear();
                 groupKey << std::setfill('0') << std::setw(6) << groupIndex++;
               }
 
               constantDistance = currentDistance;
               constantDistanceInitialized = true;
             }
           }
           consecutiveGroups[groupKey.str()].push_back(*dataset);
           previousDS = *dataset;
         }
       }
     }
     else
     {
       consecutiveGroups = groups;
     }
 
     // Step 3: sort all of the groups (not WITHIN each group) by their first frame
     /*
       build a list-1 of datasets with the first dataset one of each group
       sort this list-1
       build a new result list-2:
        - iterate list-1, for each dataset
          - find the group that contains this dataset
          - add this group as the next element to list-2
       return list-2 as the sorted output
     */
     DICOMDatasetList firstSlices;
     for (GroupIDToListType::iterator gIter = consecutiveGroups.begin();
          gIter != consecutiveGroups.end();
          ++gIter)
     {
       assert(!gIter->second.empty());
       firstSlices.push_back(gIter->second.front());
     }
 
     std::sort( firstSlices.begin(), firstSlices.end(), ParameterizedDatasetSort( m_SortCriterion ) );
 
     GroupIDToListType sortedResultBlocks;
     unsigned int groupKeyValue(0);
     for (DICOMDatasetList::iterator firstSlice = firstSlices.begin();
          firstSlice != firstSlices.end();
          ++firstSlice)
     {
       for (GroupIDToListType::iterator gIter = consecutiveGroups.begin();
            gIter != consecutiveGroups.end();
            ++groupKeyValue, ++gIter)
       {
         if (gIter->second.front() == *firstSlice)
         {
           std::stringstream groupKey;
           groupKey << std::setfill('0') << std::setw(6) << groupKeyValue; // try more than 999,999 groups and you are doomed (your application already is)
           sortedResultBlocks[groupKey.str()] = gIter->second;
         }
       }
     }
 
     groups = sortedResultBlocks;
   }
 
   return groups;
 }
 
 mitk::DICOMTagBasedSorter::ParameterizedDatasetSort
 ::ParameterizedDatasetSort(DICOMSortCriterion::ConstPointer criterion)
 :m_SortCriterion(criterion)
 {
 }
 
 bool
 mitk::DICOMTagBasedSorter::ParameterizedDatasetSort
 ::operator() (const mitk::DICOMDatasetAccess* left, const mitk::DICOMDatasetAccess* right)
 {
   assert(left);
   assert(right);
   assert(m_SortCriterion.IsNotNull());
 
   return m_SortCriterion->IsLeftBeforeRight(left, right);
 }
diff --git a/Modules/DICOMReader/mitkITKDICOMSeriesReaderHelper.cpp b/Modules/DICOMReader/mitkITKDICOMSeriesReaderHelper.cpp
index a227eb355d..50cb1c8d22 100644
--- a/Modules/DICOMReader/mitkITKDICOMSeriesReaderHelper.cpp
+++ b/Modules/DICOMReader/mitkITKDICOMSeriesReaderHelper.cpp
@@ -1,219 +1,219 @@
 /*===================================================================
 
 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.
 
 ===================================================================*/
 
 //#define MBILOG_ENABLE_DEBUG
 
 #include "mitkITKDICOMSeriesReaderHelper.h"
 #include "mitkITKDICOMSeriesReaderHelper.txx"
 
 #define switch3DCase(IOType, T) \
   case IOType: return LoadDICOMByITK< T >(filenames, correctTilt, tiltInfo, io);
 
 bool
 mitk::ITKDICOMSeriesReaderHelper
 ::CanHandleFile(const std::string& filename)
 {
   MITK_DEBUG << "ITKDICOMSeriesReaderHelper::CanHandleFile " << filename;
-  static itk::GDCMImageIO::Pointer tester = itk::GDCMImageIO::New();
+  itk::GDCMImageIO::Pointer tester = itk::GDCMImageIO::New();
   if ( tester->CanReadFile(filename.c_str()) )
   {
     tester->SetFileName( filename.c_str() );
     tester->ReadImageInformation();
 
     std::string numberOfFrames;
     if (tester->GetValueFromTag("0028|0008", numberOfFrames))
     {
       std::istringstream converter(numberOfFrames);
       int i;
       if (converter >> i)
       {
         MITK_DEBUG << "Number of Frames for " << filename << ": " << numberOfFrames;
         return (i <= 1); // cannot handle multi-frame
       }
       else
       {
         return true; // we assume single-frame
       }
     }
     else
     {
       MITK_DEBUG << "No Number of Frames tag for " << filename;
       // friendly old single-frame file
       return true;
     }
   }
 
   MITK_DEBUG << "GDCMImageIO found: No DICOM in " << filename;
   // does not seem to be DICOM
   return false;
 }
 
 mitk::Image::Pointer
 mitk::ITKDICOMSeriesReaderHelper
 ::Load( const StringContainer& filenames, bool correctTilt, const GantryTiltInformation& tiltInfo )
 {
   if( filenames.empty() )
   {
     MITK_DEBUG << "Calling LoadDicomSeries with empty filename string container. Probably invalid application logic.";
     return NULL; // this is not actually an error but the result is very simple
   }
 
   typedef itk::GDCMImageIO DcmIoType;
   DcmIoType::Pointer io = DcmIoType::New();
 
   try
   {
     if (io->CanReadFile(filenames.front().c_str()))
     {
       io->SetFileName(filenames.front().c_str());
       io->ReadImageInformation();
 
       if (io->GetPixelType() == itk::ImageIOBase::SCALAR)
       {
         switch (io->GetComponentType())
         {
           switch3DCase(DcmIoType::UCHAR, unsigned char)
           switch3DCase(DcmIoType::CHAR, char)
           switch3DCase(DcmIoType::USHORT, unsigned short)
           switch3DCase(DcmIoType::SHORT, short)
           switch3DCase(DcmIoType::UINT, unsigned int)
           switch3DCase(DcmIoType::INT, int)
           switch3DCase(DcmIoType::ULONG, long unsigned int)
           switch3DCase(DcmIoType::LONG, long int)
           switch3DCase(DcmIoType::FLOAT, float)
           switch3DCase(DcmIoType::DOUBLE, double)
           default:
             MITK_ERROR << "Found unsupported DICOM scalar pixel type: (enum value) " << io->GetComponentType();
         }
       }
       else if (io->GetPixelType() == itk::ImageIOBase::RGB)
       {
         switch (io->GetComponentType())
         {
           switch3DCase(DcmIoType::UCHAR, itk::RGBPixel<unsigned char>)
           switch3DCase(DcmIoType::CHAR, itk::RGBPixel<char>)
           switch3DCase(DcmIoType::USHORT, itk::RGBPixel<unsigned short>)
           switch3DCase(DcmIoType::SHORT, itk::RGBPixel<short>)
           switch3DCase(DcmIoType::UINT, itk::RGBPixel<unsigned int>)
           switch3DCase(DcmIoType::INT, itk::RGBPixel<int>)
           switch3DCase(DcmIoType::ULONG, itk::RGBPixel<long unsigned int>)
           switch3DCase(DcmIoType::LONG, itk::RGBPixel<long int>)
           switch3DCase(DcmIoType::FLOAT, itk::RGBPixel<float>)
           switch3DCase(DcmIoType::DOUBLE, itk::RGBPixel<double>)
           default:
             MITK_ERROR << "Found unsupported DICOM scalar pixel type: (enum value) " << io->GetComponentType();
         }
       }
 
       MITK_ERROR << "Unsupported DICOM pixel type";
       return NULL;
     }
   }
   catch(itk::MemoryAllocationError& e)
   {
     MITK_ERROR << "Out of memory. Cannot load DICOM series: " << e.what();
   }
   catch(std::exception& e)
   {
     MITK_ERROR << "Error encountered when loading DICOM series:" << e.what();
   }
   catch(...)
   {
     MITK_ERROR << "Unspecified error encountered when loading DICOM series.";
   }
 
   return NULL;
 }
 
 #define switch3DnTCase(IOType, T) \
   case IOType: return LoadDICOMByITK3DnT< T >(filenamesLists, correctTilt, tiltInfo, io);
 
 mitk::Image::Pointer
 mitk::ITKDICOMSeriesReaderHelper
 ::Load3DnT( const StringContainerList& filenamesLists, bool correctTilt, const GantryTiltInformation& tiltInfo )
 {
   if( filenamesLists.empty() || filenamesLists.front().empty() )
   {
     MITK_DEBUG << "Calling LoadDicomSeries with empty filename string container. Probably invalid application logic.";
     return NULL; // this is not actually an error but the result is very simple
   }
 
   typedef itk::GDCMImageIO DcmIoType;
   DcmIoType::Pointer io = DcmIoType::New();
 
   try
   {
     if (io->CanReadFile(filenamesLists.front().front().c_str()))
     {
       io->SetFileName(filenamesLists.front().front().c_str());
       io->ReadImageInformation();
 
       if (io->GetPixelType() == itk::ImageIOBase::SCALAR)
       {
         switch (io->GetComponentType())
         {
           switch3DnTCase(DcmIoType::UCHAR, unsigned char)
           switch3DnTCase(DcmIoType::CHAR, char)
           switch3DnTCase(DcmIoType::USHORT, unsigned short)
           switch3DnTCase(DcmIoType::SHORT, short)
           switch3DnTCase(DcmIoType::UINT, unsigned int)
           switch3DnTCase(DcmIoType::INT, int)
           switch3DnTCase(DcmIoType::ULONG, long unsigned int)
           switch3DnTCase(DcmIoType::LONG, long int)
           switch3DnTCase(DcmIoType::FLOAT, float)
           switch3DnTCase(DcmIoType::DOUBLE, double)
           default:
             MITK_ERROR << "Found unsupported DICOM scalar pixel type: (enum value) " << io->GetComponentType();
         }
       }
       else if (io->GetPixelType() == itk::ImageIOBase::RGB)
       {
         switch (io->GetComponentType())
         {
           switch3DnTCase(DcmIoType::UCHAR, itk::RGBPixel<unsigned char>)
           switch3DnTCase(DcmIoType::CHAR, itk::RGBPixel<char>)
           switch3DnTCase(DcmIoType::USHORT, itk::RGBPixel<unsigned short>)
           switch3DnTCase(DcmIoType::SHORT, itk::RGBPixel<short>)
           switch3DnTCase(DcmIoType::UINT, itk::RGBPixel<unsigned int>)
           switch3DnTCase(DcmIoType::INT, itk::RGBPixel<int>)
           switch3DnTCase(DcmIoType::ULONG, itk::RGBPixel<long unsigned int>)
           switch3DnTCase(DcmIoType::LONG, itk::RGBPixel<long int>)
           switch3DnTCase(DcmIoType::FLOAT, itk::RGBPixel<float>)
           switch3DnTCase(DcmIoType::DOUBLE, itk::RGBPixel<double>)
           default:
             MITK_ERROR << "Found unsupported DICOM scalar pixel type: (enum value) " << io->GetComponentType();
         }
       }
 
       MITK_ERROR << "Unsupported DICOM pixel type";
       return NULL;
     }
   }
   catch(itk::MemoryAllocationError& e)
   {
     MITK_ERROR << "Out of memory. Cannot load DICOM series: " << e.what();
   }
   catch(std::exception& e)
   {
     MITK_ERROR << "Error encountered when loading DICOM series:" << e.what();
   }
   catch(...)
   {
     MITK_ERROR << "Unspecified error encountered when loading DICOM series.";
   }
 
   return NULL;
 }
diff --git a/Modules/DICOMReader/mitkNormalDirectionConsistencySorter.cpp b/Modules/DICOMReader/mitkNormalDirectionConsistencySorter.cpp
index d152d03a6b..ccc16a9180 100644
--- a/Modules/DICOMReader/mitkNormalDirectionConsistencySorter.cpp
+++ b/Modules/DICOMReader/mitkNormalDirectionConsistencySorter.cpp
@@ -1,173 +1,171 @@
 /*=================================================================== 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.
 
 ===================================================================*/
 
 //#define MBILOG_ENABLE_DEBUG
 
 #include "mitkNormalDirectionConsistencySorter.h"
 
 #include <algorithm>
 
 mitk::NormalDirectionConsistencySorter
 ::NormalDirectionConsistencySorter()
 :DICOMDatasetSorter()
 {
 }
 
 mitk::NormalDirectionConsistencySorter
 ::NormalDirectionConsistencySorter(const NormalDirectionConsistencySorter& other )
 :DICOMDatasetSorter(other)
 {
 }
 
 mitk::NormalDirectionConsistencySorter
 ::~NormalDirectionConsistencySorter()
 {
 }
 
 void
 mitk::NormalDirectionConsistencySorter
 ::PrintConfiguration(std::ostream& os, const std::string& indent) const
 {
   os << indent << "NormalDirectionConsistencySorter" << std::endl;
 }
 
 
 mitk::NormalDirectionConsistencySorter&
 mitk::NormalDirectionConsistencySorter
 ::operator=(const NormalDirectionConsistencySorter& other)
 {
   if (this != &other)
   {
     DICOMDatasetSorter::operator=(other);
   }
   return *this;
 }
 
 bool
 mitk::NormalDirectionConsistencySorter
 ::operator==(const DICOMDatasetSorter& other) const
 {
   return dynamic_cast<const NormalDirectionConsistencySorter*>(&other) != NULL;
 }
 
 
 mitk::DICOMTagList
 mitk::NormalDirectionConsistencySorter
 ::GetTagsOfInterest()
 {
   DICOMTagList tags;
   tags.push_back( DICOMTag(0x0020, 0x0032) ); // ImagePositionPatient
   tags.push_back( DICOMTag(0x0020, 0x0037) ); // ImageOrientationPatient
 
   return tags;
 }
 
 void
 mitk::NormalDirectionConsistencySorter
 ::Sort()
 {
   DICOMDatasetList datasets = GetInput();
 
   if (datasets.size() > 1)
   {
     // at some point in the code, there is the expectation that
     // the direction of the slice normals is the same as the direction between
     // first and last slice origin. We need to make this sure here, because
     // we want to feed the files into itk::ImageSeriesReader with the consistent
     // setting of ReverseOrderOff.
 
     static const DICOMTag tagImagePositionPatient = DICOMTag(0x0020,0x0032); // Image Position (Patient)
     static const DICOMTag    tagImageOrientation = DICOMTag(0x0020, 0x0037); // Image Orientation
 
     DICOMDatasetAccess* firstDS = datasets.front();
     DICOMDatasetAccess*  lastDS = datasets.back();
 
     // make sure here that the direction from slice to slice is the direction of
     // image normals...
     std::string imageOrientationString = firstDS->GetTagValueAsString( tagImageOrientation );
     std::string imagePositionPatientFirst = firstDS->GetTagValueAsString( tagImagePositionPatient );
     std::string imagePositionPatientLast = lastDS->GetTagValueAsString( tagImagePositionPatient );
 
-    static Vector3D right; right.Fill(0.0);
-    static Vector3D up; up.Fill(0.0);
-    static bool hasOrientation(false);
+    Vector3D right; right.Fill(0.0);
+    Vector3D up; up.Fill(0.0);
+    bool hasOrientation(false);
     DICOMStringToOrientationVectors( imageOrientationString,
         right, up, hasOrientation );
 
-    static Point3D firstOrigin; firstOrigin.Fill(0.0f);
-    static bool firstHasOrigin(false);
+    Point3D firstOrigin; firstOrigin.Fill(0.0f);
+    bool firstHasOrigin(false);
     firstOrigin = DICOMStringToPoint3D( imagePositionPatientFirst, firstHasOrigin );
 
-    static Point3D lastOrigin; lastOrigin.Fill(0.0f);
-    static bool lastHasOrigin(false);
+    Point3D lastOrigin; lastOrigin.Fill(0.0f);
+    bool lastHasOrigin(false);
     lastOrigin = DICOMStringToPoint3D( imagePositionPatientLast, lastHasOrigin );
 
-    static Vector3D normal;
+    Vector3D normal;
     normal[0] = right[1] * up[2] - right[2] * up[1];
     normal[1] = right[2] * up[0] - right[0] * up[2];
     normal[2] = right[0] * up[1] - right[1] * up[0];
     normal.Normalize();
 
-    static Vector3D directionOfSlices;
+    Vector3D directionOfSlices;
     directionOfSlices = lastOrigin - firstOrigin;
     directionOfSlices.Normalize();
 
-    static double projection = 0.0;
-    projection = 0.0;
-    projection = normal * directionOfSlices;
+    double projection = normal * directionOfSlices;
 
     MITK_DEBUG << "Making sense of \norientation '" << imageOrientationString
                << "'\nfirst position '" << imagePositionPatientFirst
                << "'\nlast position '" << imagePositionPatientLast << "'";
     MITK_DEBUG << "Normal: " << normal;
     MITK_DEBUG << "Direction of slices: " << directionOfSlices;
     MITK_DEBUG << "Projection of direction onto slice normal: " << projection;
 
     if ( projection < 0.0 )
     {
       MITK_DEBUG << "Need to reverse filenames";
       std::reverse( datasets.begin(), datasets.end() );
 
       m_TiltInfo = GantryTiltInformation::MakeFromTagValues(
           imagePositionPatientLast,
           imagePositionPatientFirst,
           imageOrientationString,
           datasets.size() - 1
           );
     }
     else
     {
       m_TiltInfo = GantryTiltInformation::MakeFromTagValues(
           imagePositionPatientFirst,
           imagePositionPatientLast,
           imageOrientationString,
           datasets.size() - 1
           );
     }
   }
   else // just ONE dataset, do not forget to reset tilt information
   {
     m_TiltInfo = GantryTiltInformation(); // empty info
   }
 
   this->SetNumberOfOutputs(1);
   this->SetOutput(0, datasets);
 }
 
 mitk::GantryTiltInformation
 mitk::NormalDirectionConsistencySorter
 ::GetTiltInformation() const
 {
   return m_TiltInfo;
 }
diff --git a/Modules/DICOMReader/mitkSortByImagePositionPatient.cpp b/Modules/DICOMReader/mitkSortByImagePositionPatient.cpp
index a3b141811e..d228f7e86c 100644
--- a/Modules/DICOMReader/mitkSortByImagePositionPatient.cpp
+++ b/Modules/DICOMReader/mitkSortByImagePositionPatient.cpp
@@ -1,170 +1,168 @@
 /*===================================================================
 
 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 "mitkSortByImagePositionPatient.h"
 #include "mitkDICOMTag.h"
 
 mitk::SortByImagePositionPatient
 ::SortByImagePositionPatient(DICOMSortCriterion::Pointer secondaryCriterion)
 :DICOMSortCriterion(secondaryCriterion)
 {
 }
 
 mitk::SortByImagePositionPatient
 ::~SortByImagePositionPatient()
 {
 }
 
 mitk::SortByImagePositionPatient
 ::SortByImagePositionPatient(const SortByImagePositionPatient& other )
 :DICOMSortCriterion(other)
 {
 }
 
 mitk::SortByImagePositionPatient&
 mitk::SortByImagePositionPatient
 ::operator=(const SortByImagePositionPatient& other)
 {
   if (this != &other)
   {
     DICOMSortCriterion::operator=(other);
   }
   return *this;
 }
 
 bool
 mitk::SortByImagePositionPatient
 ::operator==(const DICOMSortCriterion& other) const
 {
   return dynamic_cast<const SortByImagePositionPatient*>(&other) != NULL; // same class
 }
 
 void
 mitk::SortByImagePositionPatient
 ::Print(std::ostream& os) const
 {
   os << "(0020,0032) Image Position (Patient) along normal of (0020,0037) Image Orientation (Patient)";
 }
 
 mitk::DICOMTagList
 mitk::SortByImagePositionPatient
 ::GetTagsOfInterest() const
 {
   DICOMTagList tags;
   tags.push_back( DICOMTag(0x0020, 0x0032) ); // ImagePositionPatient
   tags.push_back( DICOMTag(0x0020, 0x0037) ); // ImageOrientationPatient
 
   return tags;
 }
 
 bool
 mitk::SortByImagePositionPatient
 ::IsLeftBeforeRight(const mitk::DICOMDatasetAccess* left, const mitk::DICOMDatasetAccess* right) const
 {
   bool possible(false);
   double distance = InternalNumericDistance(left, right, possible); // returns 0.0 if not possible
   if (possible)
   {
     return distance > 0.0;
   }
   else
   {
     return this->NextLevelIsLeftBeforeRight(left, right);
   }
 }
 
 double
 mitk::SortByImagePositionPatient
 ::InternalNumericDistance(const mitk::DICOMDatasetAccess* left, const mitk::DICOMDatasetAccess* right, bool& possible) const
 {
   // sort by distance to world origin, assuming (almost) equal orientation
   static const DICOMTag tagImagePositionPatient = DICOMTag(0x0020,0x0032); // Image Position (Patient)
   static const DICOMTag    tagImageOrientation = DICOMTag(0x0020, 0x0037); // Image Orientation
 
-  static Vector3D leftRight; leftRight.Fill(0.0);
-  static Vector3D leftUp; leftUp.Fill(0.0);
-  static bool leftHasOrientation(false);
+  Vector3D leftRight; leftRight.Fill(0.0);
+  Vector3D leftUp; leftUp.Fill(0.0);
+  bool leftHasOrientation(false);
   DICOMStringToOrientationVectors( left->GetTagValueAsString( tagImageOrientation ),
                                    leftRight, leftUp, leftHasOrientation );
 
-  static Vector3D rightRight; rightRight.Fill(0.0);
-  static Vector3D rightUp; rightUp.Fill(0.0);
-  static bool rightHasOrientation(false);
+  Vector3D rightRight; rightRight.Fill(0.0);
+  Vector3D rightUp; rightUp.Fill(0.0);
+  bool rightHasOrientation(false);
   DICOMStringToOrientationVectors( right->GetTagValueAsString( tagImageOrientation ),
                                    rightRight, rightUp, rightHasOrientation );
 
-  static Point3D leftOrigin; leftOrigin.Fill(0.0f);
-  static bool leftHasOrigin(false);
+  Point3D leftOrigin; leftOrigin.Fill(0.0f);
+  bool leftHasOrigin(false);
   leftOrigin = DICOMStringToPoint3D( left->GetTagValueAsString( tagImagePositionPatient ), leftHasOrigin );
 
-  static Point3D rightOrigin; rightOrigin.Fill(0.0f);
-  static bool rightHasOrigin(false);
+  Point3D rightOrigin; rightOrigin.Fill(0.0f);
+  bool rightHasOrigin(false);
   rightOrigin = DICOMStringToPoint3D( right->GetTagValueAsString( tagImagePositionPatient ), rightHasOrigin );
 
   //   we tolerate very small differences in image orientation, since we got to know about
   //   acquisitions where these values change across a single series (7th decimal digit)
   //   (http://bugs.mitk.org/show_bug.cgi?id=12263)
   //   still, we want to check if our assumption of 'almost equal' orientations is valid
   for (unsigned int dim = 0; dim < 3; ++dim)
   {
     if (   fabs(leftRight[dim] - rightRight[dim]) > 0.0001
         || fabs(leftUp[dim] - rightUp[dim]) > 0.0001)
     {
       MITK_ERROR << "Dicom images have different orientations.";
       throw std::logic_error("Dicom images have different orientations. Call GetSeries() first to separate images.");
     }
   }
 
-  static Vector3D normal;
+  Vector3D normal;
   normal[0] = leftRight[1] * leftUp[2] - leftRight[2] * leftUp[1];
   normal[1] = leftRight[2] * leftUp[0] - leftRight[0] * leftUp[2];
   normal[2] = leftRight[0] * leftUp[1] - leftRight[1] * leftUp[0];
 
-  static double leftDistance = 0.0;
-  static double rightDistance = 0.0;
-  leftDistance = 0.0;
-  rightDistance = 0.0;
+  double leftDistance = 0.0;
+  double rightDistance = 0.0;
 
   // this computes the distance from world origin (0,0,0) ALONG THE NORMAL of the image planes
   for (unsigned int dim = 0; dim < 3; ++dim)
   {
     leftDistance += normal[dim] * leftOrigin[dim];
     rightDistance += normal[dim] * rightOrigin[dim];
   }
 
   // if we can sort by just comparing the distance, we do exactly that
   if ( fabs(leftDistance - rightDistance) >= mitk::eps)
   {
     possible = true;
     // default: compare position
     return rightDistance - leftDistance; // if (left < right> ==> diff > 0
   }
   else
   {
     possible = false;
     return 0.0;
   }
 }
 
 
 double
 mitk::SortByImagePositionPatient
 ::NumericDistance(const mitk::DICOMDatasetAccess* from, const mitk::DICOMDatasetAccess* to) const
 {
   bool possible(false);
   double retVal = InternalNumericDistance(from, to, possible); // returns 0.0 if not possible
   return possible ? retVal : 0.0;
 }