throws DicomStreamException {
int tag1 = ByteUtils.bytesToTag(b128, 0, bigEndian);
VR vr = ElementDictionary.vrOf(tag1, null);
if (vr == VR.UN)
return false;
if (ByteUtils.bytesToVR(b128, 4) == vr.code()) {
this.tsuid = bigEndian ? UID.ExplicitVRBigEndianRetired
: UID.ExplicitVRLittleEndian;
this.bigEndian = bigEndian;
this.explicitVR = true;
return true;