diff --git a/Modules/DiffusionImaging/Quantification/Algorithms/mitkTractAnalyzer.h b/Modules/DiffusionImaging/Quantification/Algorithms/mitkTractAnalyzer.h
index f1f0041c1e..d9c3296fcf 100644
--- a/Modules/DiffusionImaging/Quantification/Algorithms/mitkTractAnalyzer.h
+++ b/Modules/DiffusionImaging/Quantification/Algorithms/mitkTractAnalyzer.h
@@ -1,148 +1,152 @@
 /*===================================================================
 
 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 __mitkTractAnalyzer_h_
 #define __mitkTractAnalyzer_h_
 
 #include "QuantificationExports.h"
 #include <itkImage.h>
 #include "mitkImage.h"
 #include "mitkImageCast.h"
 
 #include <mitkTbssRoiImage.h>
 #include <mitkPointSet.h>
 
 
 namespace mitk{
-/** \class TractAnalyzer
- */
+/**
+  * \brief Creates a region of interest for tract-specific analysis of existing TBSS data
+  *
+  * This class needs a 3D image (typically a mean FA skeleton as produced by the standard TBSS pipeline of FSL)
+  * and a user-defined point set defining the points through which the region of interest should pass.
+  */
 
 
 class Quantification_EXPORT TractAnalyzer
 {
 
 public:
 
 
   TractAnalyzer();
   ~TractAnalyzer() {}
 
 
   /** Image type definitions */
   typedef itk::Image<char,3> CharImageType;
   typedef itk::Image<float,3> FloatImageType;
 
 
   /** \brief Main method for region of interest calculation
    *
    * A region of interest is calculated adding the segments between the points on the ROI
    * that was specified by the user.
    */
   void MakeRoi();
 
 
 
   /** \brief Sets the input image
    *
    * The region of interest is calculated on a 3D image. This is generally the mean FA skeleton as calculated
    * in the standard TBSS pipeline (see http://fsl.fmrib.ox.ac.uk/fsl/fslwiki/TBSS).
    */
   mitk::TbssRoiImage::Pointer GetRoiImage()
   {
     return m_TbssRoi;
   }
 
 
   /** \brief Sets the input image
    *
    * The region of interest is calculated on a 3D image. This is generally the mean FA skeleton as calculated
    * in the standard TBSS pipeline (see http://fsl.fmrib.ox.ac.uk/fsl/fslwiki/TBSS).
    */
   void SetInputImage(mitk::Image::Pointer inputImage)
   {
     m_InputImage = inputImage;
   }
 
 
   /** \brief Sets the user-defined point set
    *
    * Set the user-defined point sets. The region of interest must pass through these points.
    */
   void SetPointSet(mitk::PointSet::Pointer pointSet)
   {
     m_PointSetNode = pointSet;
   }
 
 
   /** \brief Sets a lower bound for the threshold.
    *
    * Low fractional anisotropy values can indicate partial volume of non white matter tissue.
    * This thresholds limits the search for a region of interest to voxels with a minimum value.
    */
   void SetThreshold(double threshold)
   {
     m_Threshold = threshold;
   }
 
 
 
   /** \brief Returns a string with the indices of points on the region of interest
    *
    * The region of interest calculated by the TractAnalyzer contains a list of ITK indices.
    * This method returns a string containing these indices for display in the GUI
    */
   std::string GetPathDescription()
   {
     return m_PathDescription;
   }
 
 protected:
 
 
 
   /** \brief Calculates a segment of the region of interest
    *
    * The region of interest is calculated on a 3D image. This is generally the mean FA skeleton as calculated
    * in the standard TBSS pipeline (see http://fsl.fmrib.ox.ac.uk/fsl/fslwiki/TBSS).
    */
   std::vector< itk::Index<3> > CreateSegment(itk::Index<3> startPoint, itk::Index<3> endPoint);
 
 
   /** \brief Output TbssRoiImage */
   mitk::TbssRoiImage::Pointer m_TbssRoi;
 
   /** \brief Inputimage */
   mitk::Image::Pointer m_InputImage;
 
   /** \brief Threshold for ROI search */
   double m_Threshold;
 
   /** \brief User defined point set */
   mitk::PointSet::Pointer m_PointSetNode;
 
   /** \brief Path description in as string for display in GUI */
   std::string m_PathDescription;
 
 
 
 private:
 
 };
 
 }
 
 #endif //__itkTractAnalyzer_h_