Manage imaging workflow steps using DICOM UPS-RS (Worklist Service) to create, claim, update, and complete Workitems

Steps

1. Confirm the origin server supports the Worklist Service (UPS-RS, DICOM PS3.18 §11), distinct from legacy DIMSE Modality Worklist C-FIND.
2. Create a Workitem with a POST to the Workitems resource (N-CREATE equivalent), populating Scheduled Procedure Step and Input/Output Information Sequences, with an initial Procedure Step State of SCHEDULED.
3. Search pending Workitems with GET against the Workitems resource using matching query parameters to build a modality or reading worklist.
4. Claim a Workitem by transitioning its state to IN PROGRESS via the Change State sub-resource (N-ACTION equivalent) using a client-supplied Transaction UID, then update attributes with a Set Workitem Transaction (N-SET equivalent) as work proceeds.
5. Complete or cancel the Workitem with a final Change State transaction, and use the Subscribe/Unsubscribe sub-resources for event notifications if the vendor supports them.
6. Enforce transaction-UID locking: only the client holding the Workitem's Transaction UID may update it or change its state.