/// <summary>Writes a DICOM file header to a stream</summary>
public static void WriteHeader(BufferedStreamWriter output, DicomFileMetaInformation fileMetaInformation)
{
output.WriteZeros(128);
output.WriteBytes(BeforeFileMetaInformationLength);
var fileMetaInformationLengthPosition = output.Position;
output.WriteZeros(4);
output.WriteBytes(AfterFileMetaInformationLength);
var metaInformationWriter = DicomStreamWriter.Create(output, DicomUID.TransferSyntax.ExplicitVRLittleEndian);
FileMetaInformationSerializer.Serialize(metaInformationWriter, fileMetaInformation);
var endOfFileMetaInformationPosition = output.Position;
output.Flush(FlushMode.Shallow);
var fileMetaInformationLength = endOfFileMetaInformationPosition - (fileMetaInformationLengthPosition + 4);
output.Stream.Seek(fileMetaInformationLengthPosition, SeekOrigin.Begin);
output.Stream.Write(BitConverter.GetBytes((uint)fileMetaInformationLength));
output.Stream.Seek(endOfFileMetaInformationPosition, SeekOrigin.Begin);
}