#if CLITK_USE_SYSTEM_GDCM == 1
vtkSmartPointer<vtkGDCMPolyDataReader> reader = vtkGDCMPolyDataReader::New();
reader->SetFileName(filename.c_str());
reader->Update();
#if CLITK_USE_SYSTEM_GDCM == 1
vtkSmartPointer<vtkGDCMPolyDataReader> reader = vtkGDCMPolyDataReader::New();
reader->SetFileName(filename.c_str());
reader->Update();