DICOM PS3.3 2021e - Information Object Definitions

7.14.4 RT Segment Annotation

The RT Segment Annotation annotates segmented regions defined in other SOP Instances with radiotherapy-specific information about the role and RT-specific types of the regions (e.g. clinical target volume, organ at risk, bolus), and other information such as density definitions. An RT Segment Annotation SOP Instance may reference any geometric general-purpose representation entity defined by DICOM.

DICOM PS3.3 2021e - Information Object Definitions