DICOM PS3.17 2019b - Explanatory Information
FFF.2.3.2.2 Encoding Outline

The Enhanced XA SOP Class allows the encoding of the mask Attributes similar to what the XA SOP Class provides.

The Enhanced XA SOP Class allows defining of specific display settings to be applied to a subset of frames, for instance the recommended viewing mode and the degree of visibility of the mask.

DICOM PS3.17 2019b - Explanatory Information