BBTK_OUTPUT(ImagePlanes,PlaneX,"The image plane in X direction",vtkImagePlaneWidget*,"");
BBTK_OUTPUT(ImagePlanes,PlaneY,"The image plane in Y direction",vtkImagePlaneWidget*,"");
BBTK_OUTPUT(ImagePlanes,PlaneZ,"The image plane in Z direction",vtkImagePlaneWidget*,"");
BBTK_OUTPUT(ImagePlanes,PlaneX,"The image plane in X direction",vtkImagePlaneWidget*,"");
BBTK_OUTPUT(ImagePlanes,PlaneY,"The image plane in Y direction",vtkImagePlaneWidget*,"");
BBTK_OUTPUT(ImagePlanes,PlaneZ,"The image plane in Z direction",vtkImagePlaneWidget*,"");