Unique ID across multiple modalities

General
1

Hello,

When we check changes such as NEW_STUDY or STABLE_STUDY, we check on stable studies. Now since the data is coming from different modalities, can there be a possibility that 2 different modalities, or the same modality at different times, generate the same Study ID?

If so, is there any such field that can be guaranteed as a unique value, something that will never replicate for effective tracking of studies?

2

Hi,

The StudyInstanceUID tag is unique in a real life scenario.

HTH,

Alain.

3

Thank you Alain. However, on any event, the study ID is only fetched. Is there an option where instead on Study ID, Study InstanceUID is returned when an event occurs?

4

No, but you can get if from the Rest API in the MainDicomTags node of /studies/{id}

5

Thank you Alain. So, just to confirm, even if orthanc got 2 Studies with same Study IDs, but different Study Instance UIDs, one won’t overwrite the other?

6

I confirm your understanding is correct.

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