How to use the output of send_c_find(), need a StudyInstanceUID

[dcri-tim]

I had previously written a utility using the dcmtk findscu.exe to query an AE, then parse the text output with regular expressions. After parsing the output, I use movescu.exe to do a C-MOVE with the StudyInstanceUID.

I am rewriting this to use pynetdicom. I have the association working, and if I use debug_logger() I see text output similar to findscu.exe.

But I don't understand how to read the dataset(s) returned from send_c_find(). All it seems to be is the status. I was expecting it to be zero, one or more datasets for the found studies, including a StudyInstanceUID for each. I see the StudyInstanceUID in the debug_logger text, so I know it is being returned from the SCP.

All the examples of send_c_find() just check that the call was successful or not, but I don't see anything that shows how to read the Study UID from the returned datasets. I only see status. Since this as Python I expected to read a value from a returned dataset or datasets.

How do I get a StudyInstanceUID from the results of send_c_find()? Am I supposed to read and parse the text somehow like I did with findscu?

[mrbean-bremen]

The send_c_find call returns a tuple of status and dataset (or None if the query failed), so you can just query it as usual:

    responses = assoc.send_c_find(ds, PatientRootQueryRetrieveInformationModelFind)
    for (status, dataset) in responses:
        if status:
            uid = dataset.StudyInstanceUID
...

[dcri-tim]

Thank you, this is exactly what I needed. Can't thank you enough... cheers!