+ itkGetMacro( ParametersDialog, ParametersQtDialog* );
+ itkGetMacro( SingleInteractor, vtkRenderWindowInteractor* );
+ itkGetMacro( MPRViewer, SimpleMPRWidget* );
+
+ itkSetObjectMacro( ParametersDialog, ParametersQtDialog );
+ itkSetObjectMacro( SingleInteractor, vtkRenderWindowInteractor );
+ itkSetObjectMacro( MPRViewer, SimpleMPRWidget );