private static DicomSequenceItem[] UpdateSourceImageSequence(IDicomAttributeProvider baseSop, IEnumerable <IDicomAttributeProvider> overlaySops)
{
var baseItem = new SourceImageSequence
{
ReferencedSopInstanceUid = baseSop[DicomTags.SopInstanceUid].ToString(),
ReferencedSopClassUid = baseSop[DicomTags.SopClassUid].ToString(),
SpatialLocationsPreserved = SpatialLocationsPreserved.Yes,
PurposeOfReferenceCodeSequence = SourceImagePurposesOfReferenceContextGroup.SourceImageForImageProcessingOperation
};
var maskItems = overlaySops != null?overlaySops.GroupBy(s => s[DicomTags.SopInstanceUid].ToString())
.Select(s => s.First())
.Select(s => new SourceImageSequence
{
ReferencedSopInstanceUid = s[DicomTags.SopInstanceUid].ToString(),
ReferencedSopClassUid = s[DicomTags.SopClassUid].ToString(),
SpatialLocationsPreserved = SpatialLocationsPreserved.Yes,
PurposeOfReferenceCodeSequence = SourceImagePurposesOfReferenceContextGroup.SourceImageForImageProcessingOperation
}) : Enumerable.Empty <SourceImageSequence>();
return(new[] { baseItem }.Concat(maskItems).Select(s => s.DicomSequenceItem).ToArray());
}
/// <summary>
/// Creates a single instance of a SourceImageSequence item. Does not modify the SourceImageSequence in the underlying collection.
/// </summary>
public SourceImageSequence CreateSourceImageSequence()
{
var iodBase = new SourceImageSequence(new DicomSequenceItem());
return(iodBase);
}