diff --git a/Modules/ModelFit/include/mitkExponentialDecayModel.h b/Modules/ModelFit/include/mitkExponentialDecayModel.h
index 843535206d..b7e4d991c7 100644
--- a/Modules/ModelFit/include/mitkExponentialDecayModel.h
+++ b/Modules/ModelFit/include/mitkExponentialDecayModel.h
@@ -1,145 +1,144 @@
 /*============================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center (DKFZ)
 All rights reserved.
 
 Use of this source code is governed by a 3-clause BSD license that can be
 found in the LICENSE file.
 
 ============================================================================*/
 
 #ifndef mitkExponentialDecayModel_h
 #define mitkExponentialDecayModel_h
 
 #include "mitkModelBase.h"
 
 #include "MitkModelFitExports.h"
 
 namespace mitk
 {
 
   /** @class ExponentialDecayModel
-  * @brief Simple model of the MR T2 signal decay. This corresponds to an exponential decay in the form of:
-  * f(t) = M0 * exp(-t/T2) with T2 being the transverse / spin-spin relaxation time. The derived parameter R2
-  * is calculated from T2 by inversion.
+  * @brief Simple model of exponential decay in the form of:
+  * y(x) = y-intercept * exp(-x/lambda) with lambda being the decay constant.
   */
   class MITKMODELFIT_EXPORT ExponentialDecayModel : public mitk::ModelBase
   {
 
   public:
     typedef ExponentialDecayModel Self;
     typedef mitk::ModelBase Superclass;
     typedef itk::SmartPointer< Self >                            Pointer;
     typedef itk::SmartPointer< const Self >                      ConstPointer;
 
     typedef Superclass::ParameterNameType  ParameterNameType;
     typedef Superclass::ParametersSizeType ParametersSizeType;
 
     /** Method for creation through the object factory. */
     itkFactorylessNewMacro(Self);
     itkCloneMacro(Self);
 
     /** Run-time type information (and related methods). */
     itkTypeMacro(ExponentialDecayModel, ModelBase);
 
 
     static const std::string NAME_PARAMETER_y0;
     static const std::string NAME_PARAMETER_lambda;
 
     static const unsigned int NUMBER_OF_PARAMETERS;
 
     static const std::string UNIT_PARAMETER_y0;
     static const std::string UNIT_PARAMETER_lambda;
 
     static const unsigned int POSITION_PARAMETER_y0;
     static const unsigned int POSITION_PARAMETER_lambda;
 
     static const std::string NAME_DERIVED_PARAMETER_k;
 
     static const unsigned int NUMBER_OF_DERIVED_PARAMETERS;
 
     static const std::string UNIT_DERIVED_PARAMETER_k;
 
     static const unsigned int NUMBER_OF_STATIC_PARAMETERS;
 
     static const std::string MODEL_DISPLAY_NAME;
 
     static const std::string MODEL_TYPE;
 
     static const std::string FUNCTION_STRING;
 
     static const std::string X_NAME;
 
     static const std::string X_AXIS_NAME;
 
     static const std::string X_AXIS_UNIT;
 
     static const std::string Y_AXIS_NAME;
 
     static const std::string Y_AXIS_UNIT;
 
     ParameterNamesType GetParameterNames() const override;
 
     ParametersSizeType  GetNumberOfParameters() const override;
 
     ParamterUnitMapType GetParameterUnits() const override;
 
     ParameterNamesType GetDerivedParameterNames() const override;
 
     ParametersSizeType  GetNumberOfDerivedParameters() const override;
 
     ParamterUnitMapType GetDerivedParameterUnits() const override;
 
     ParameterNamesType GetStaticParameterNames() const override;
 
     ParametersSizeType GetNumberOfStaticParameters() const override;
 
     ParamterUnitMapType GetStaticParameterUnits() const override;
 
     std::string GetModelDisplayName() const override;
 
     std::string GetModelType() const override;
 
     FunctionStringType GetFunctionString() const override;
 
     std::string GetXName() const override;
 
     std::string GetXAxisName() const override;
 
     std::string GetXAxisUnit() const override;
 
     std::string GetYAxisName() const override;
 
     std::string GetYAxisUnit() const override;
 
     mitk::ModelBase::DerivedParameterMapType ComputeDerivedParameters(
       const mitk::ModelBase::ParametersType &parameters) const;
 
   protected:
     ExponentialDecayModel() {};
     ~ExponentialDecayModel() override {};
 
     /**
      * Actual implementation of the clone method. This method should be reimplemeted
      * in subclasses to clone the extra required parameters.
      */
     itk::LightObject::Pointer InternalClone() const override;
 
     ModelResultType ComputeModelfunction(const ParametersType& parameters) const override;
 
     void SetStaticParameter(const ParameterNameType& name,
                                     const StaticParameterValuesType& values) override;
     StaticParameterValuesType GetStaticParameterValue(const ParameterNameType& name) const override;
 
   private:
 
     //No copy constructor allowed
     ExponentialDecayModel(const Self& source);
     void operator=(const Self&);  //purposely not implemented
 
   };
 }
 
 #endif