Dim tag = Dicom.DicomTag.Parse("7fe1,1008")
Dim dsSettings As DicomSequence = dcmFile.Dataset.[Get](Of DicomSequence)(tag)
DicomTag dt = new DicomTag(0x7fe1, 0x1001);
dt.PrivateCreator = new DicomPrivateCreator("GEMS_Ultrasound_MovieGroup_001");
DicomSequence sq= _file.Dataset.Get<DicomSequence>(dt);