DICOM PS3.3 2021e - Information Object Definitions
A.34.17.4.7 Waveform Annotation Module

For Concept Name Code Sequence (0040,A043) in the Waveform Annotation Sequence (0040,B020) DCID 19 “Patient Orientation” shall be used. Modifier Code Sequence (0040,A195) DCID 20 “Patient Orientation Modifier”.

Note

Annotations can be stored either in the Waveform Annotation Module of the waveform to which they apply, or in a separate Structured Report object. The Waveform Annotation Module is only intended for annotations made at the time of acquisition.

DICOM PS3.3 2021e - Information Object Definitions