Hi,

In search for the "correct" way to interpret the meaning and use of the
Completion Flag in Structured Report Documents I encountered multiple
discussions on this issue. What I did not find were any (if so)
implications of the Completion Flag on re-opening the SR document for
editing. I have the following questions:

- In case a DICOM Structured Report Document with the Completion Flag
(0040,A491) set to PARTIAL is saved to file (and potentially is also
send to a PACS), is it ok to just re-open the file, edit the SR content
and save the file again without changing the SOP Instance UID? Or is it
- regardless of the Completion Flag - always necessary to save new
partial SR Documents with a new SOP Instance UID?
- If a new PARTIAL or COMPLETE document is based on a PARTIAL document,
is it mandatory to fill the Predecessor Documents Sequence (0040,A360)
with the SOP Instance UID of of the PARTIAL document it is based on?

Best Regards,
Marco