// Since we maintain a list of filenames, when building a volume,
// (see vtkGdcmReader::AddFileName), we additionaly need to purge
// this list when we manually positionate the filename.
// Since we maintain a list of filenames, when building a volume,
// (see vtkGdcmReader::AddFileName), we additionaly need to purge
// this list when we manually positionate the filename.