typedef itk::ImageToVTKImageFilter <TItkImageType> ConverterType;
typename ConverterType::Pointer converter = ConverterType::New();
mItkToVtkConverters.push_back(dynamic_cast< itk::ProcessObject *>(converter.GetPointer()));
converter->SetInput(input);
converter->Update();
mVtkImages.push_back( converter->GetOutput() );
typedef itk::ImageToVTKImageFilter <TItkImageType> ConverterType;
typename ConverterType::Pointer converter = ConverterType::New();
mItkToVtkConverters.push_back(dynamic_cast< itk::ProcessObject *>(converter.GetPointer()));
converter->SetInput(input);
converter->Update();
mVtkImages.push_back( converter->GetOutput() );