A.35.7.2 Procedure Log IOD Entity-Relationship Model
This IOD uses the E-R Model in Section A.1.2, with only the SR Document IE below the Series IE.
Note
Unlike some other SR IODs, the Frame of Reference IE is critical to the synchronized time stamping of events in the Procedure Log IOD and to multi-modality coordination.
DICOM PS3.3 2023e - Information Object Definitions