internal override uint CalculateWriteLength(DicomTransferSyntax syntax, DicomWriteOptions options) { uint length = 4 + 4; length += Dataset.CalculateWriteLength(syntax, options & ~DicomWriteOptions.CalculateGroupLengths); if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem)) { length += 4 + 4; // Sequence Item Delimitation Item } return(length); }