Mask Subtraction
Mask subtraction is very different in the COM and .NET versions of DicomObjects DicomObjects.COM In the COM version of DicomObjects, two DicomImage properties associated with the Mask Subtraction operations are sometimes found a bit confusing to developers: Mask & MaskFrame. Mask This functions as a switch to turn on/off the mask subtraction operation. If Mask Subtraction Sequence (0028, 6100) exists then DicomObjects will sets the default value of Mask to 1, otherwise 0.