diff --git a/Modules/IGT/IO/mitkNavigationDataReaderCSV.cpp b/Modules/IGT/IO/mitkNavigationDataReaderCSV.cpp
index 610bd67bab..85c77bc3f1 100644
--- a/Modules/IGT/IO/mitkNavigationDataReaderCSV.cpp
+++ b/Modules/IGT/IO/mitkNavigationDataReaderCSV.cpp
@@ -1,17 +1,161 @@
 /*===================================================================
 
 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 "mitkNavigationDataReaderCSV.h"
\ No newline at end of file
+#include "mitkNavigationDataReaderCSV.h"
+
+mitk::NavigationDataReaderCSV::NavigationDataReaderCSV()
+{
+
+}
+
+mitk::NavigationDataReaderCSV::~NavigationDataReaderCSV()
+{
+
+}
+
+mitk::NavigationDataSet::Pointer mitk::NavigationDataReaderCSV::Read(std::string fileName)
+{
+  mitk::NavigationDataSet::Pointer returnValue = mitk::NavigationDataSet::New(1);
+  std::vector<std::string> fileContentLineByLine = GetFileContentLineByLine(fileName);
+  for(int i=1; (i<fileContentLineByLine.size()); i++) //skip header so start at 1
+  {
+    std::vector<mitk::NavigationData::Pointer> currentDatas;
+    currentDatas.push_back(GetNavigationDataOutOfOneLine(fileContentLineByLine.at(i)));
+    returnValue->AddNavigationDatas(currentDatas);
+  }
+  return returnValue;
+}
+
+
+std::vector<std::string> mitk::NavigationDataReaderCSV::GetFileContentLineByLine(std::string filename)
+{
+std::vector<std::string> readData = std::vector<std::string>();
+
+//save old locale
+char * oldLocale;
+oldLocale = setlocale( LC_ALL, 0 );
+
+//define own locale
+std::locale C("C");
+setlocale( LC_ALL, "C" );
+
+//read file
+std::ifstream file;
+file.open(filename.c_str(), std::ios::in);
+if (file.good())
+    {
+    //read out file
+    file.seekg(0L, std::ios::beg);  // move to begin of file
+    while (! file.eof())
+      {
+      std::string buffer;
+      std::getline(file,buffer);    // read out file line by line
+      if (buffer.size() > 0) readData.push_back(buffer);
+
+      }
+    }
+
+file.close();
+
+//switch back to old locale
+setlocale( LC_ALL, oldLocale );
+
+return readData;
+}
+
+mitk::NavigationData::Pointer mitk::NavigationDataReaderCSV::GetNavigationDataOutOfOneLine(std::string line)
+{
+  mitk::NavigationData::Pointer returnValue = mitk::NavigationData::New();
+
+  /* NOT FUNCTIONAL BECAUSE IT USES QSTRING WHICH IS NOT AVAILABLE HERE
+  QString myLine = QString(line.c_str());
+
+  QStringList myLineList = myLine.split(';');
+
+  mitk::Point3D position;
+  mitk::Quaternion orientation;
+  bool valid = false;
+  double time;
+
+  if (m_Filetype =  mitk::NavigationDataCSVSequentialPlayer::NavigationDataCSV)
+    {
+
+    if (myLineList.size() < 10)
+      {
+        MITK_ERROR << "Error: cannot read line: only found " << myLineList.size() << " fields. Last field: " << myLineList.at(myLineList.size()-1).toStdString()  ;
+        returnValue = GetEmptyNavigationData();
+        return returnValue;
+      }
+
+    time = myLineList.at(1).toDouble();
+
+    if (myLineList.at(2).toStdString() == "1") valid = true;
+
+    position[0] = myLineList.at(3).toDouble();
+    position[1] = myLineList.at(4).toDouble();
+    position[2] = myLineList.at(5).toDouble();
+
+    orientation[0] = myLineList.at(6).toDouble();
+    orientation[1] = myLineList.at(7).toDouble();
+    orientation[2] = myLineList.at(8).toDouble();
+    orientation[3] = myLineList.at(9).toDouble();
+    }
+  else
+    {
+    if (myLineList.size() < 10)
+      {
+        MITK_ERROR << "Error: cannot read line: only found " << myLineList.size() << " fields. Last field: " << myLineList.at(myLineList.size()-1).toStdString()  ;
+        returnValue = GetEmptyNavigationData();
+        return returnValue;
+      }
+
+    time = myLineList.at(1).toDouble();
+
+    //if (myLineList.at(2).toStdString() == "true")
+    //valid-flag wurde hier nicht gespeichert
+    valid = true;
+
+    position[0] = myLineList.at(3).toDouble();
+    position[1] = myLineList.at(4).toDouble();
+    position[2] = myLineList.at(5).toDouble();
+
+    orientation[0] = myLineList.at(6).toDouble();
+    orientation[1] = myLineList.at(7).toDouble();
+    orientation[2] = myLineList.at(8).toDouble();
+    orientation[3] = myLineList.at(9).toDouble();
+    }
+
+  returnValue->SetTimeStamp(time);
+  returnValue->SetDataValid(valid);
+  returnValue->SetPosition(position);
+  returnValue->SetOrientation(orientation);
+  */
+
+  return returnValue;
+}
+
+mitk::NavigationData::Pointer mitk::NavigationDataReaderCSV::GetEmptyNavigationData()
+  {
+  mitk::NavigationData::Pointer emptyNd = mitk::NavigationData::New();
+  mitk::NavigationData::PositionType position;
+  mitk::NavigationData::OrientationType orientation(0.0,0.0,0.0,0.0);
+  position.Fill(0.0);
+
+  emptyNd->SetPosition(position);
+  emptyNd->SetOrientation(orientation);
+  emptyNd->SetDataValid(false);
+  return emptyNd;
+  }
diff --git a/Modules/IGT/IO/mitkNavigationDataReaderCSV.h b/Modules/IGT/IO/mitkNavigationDataReaderCSV.h
index 36133667a0..c602974a29 100644
--- a/Modules/IGT/IO/mitkNavigationDataReaderCSV.h
+++ b/Modules/IGT/IO/mitkNavigationDataReaderCSV.h
@@ -1,30 +1,53 @@
 /*===================================================================
 
 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 MITKNavigationDataReaderCSV_H_HEADER_INCLUDED_
 #define MITKNavigationDataReaderCSV_H_HEADER_INCLUDED_
 
 #include "mitkNavigationDataReaderInterface.h"
 
 namespace mitk {
+  /** This class reads csv logged navigation datas from the hard disc and returns
+   *  the navigation data set.
+   *
+   *  Caution: at the moment only one navigation data is supported which means that only
+   *  the data of the first navigation tool in the file is read!
+   */
   class MitkIGT_EXPORT NavigationDataReaderCSV : public NavigationDataReaderInterface
   {
+  public:
+
+    mitkClassMacro(NavigationDataReaderCSV, NavigationDataReaderInterface);
+    itkNewMacro(Self);
+
+    /** @return Returns the NavigationDataSet of the first tool in the given file.
+     *          Returns an empty NavigationDataSet if the file could not be read.
+     */
+    virtual mitk::NavigationDataSet::Pointer Read(std::string fileName);
+
+  protected:
+    NavigationDataReaderCSV();
+    virtual ~NavigationDataReaderCSV();
+
+    std::vector<std::string> GetFileContentLineByLine(std::string filename);
+    mitk::NavigationData::Pointer GetNavigationDataOutOfOneLine(std::string line);
+    mitk::NavigationData::Pointer GetEmptyNavigationData();
 
   };
 }
 
 #endif // MITKNavigationDataReaderCSV_H_HEADER_INCLUDED_