typedef vtkSmartPointer<vtkImageData> VTKImageDataPointerType;
typedef vtkSmartPointer<vtkExtractVOI> VTKExtractVOIPointerType;
typedef std::string StringType;
typedef vtkSmartPointer<vtkImageData> VTKImageDataPointerType;
typedef vtkSmartPointer<vtkExtractVOI> VTKExtractVOIPointerType;
typedef std::string StringType;