C_STORE of single image session results in two session items in pre-archive

[Ralph Brecheisen]

Hi

I'm using C_STORE to push DICOM files of two subjects, each with a single image session (consisting of multiple scans), to the XNAT pre-archive but when I do, the pre-archive shows two sessions for each subject instead of just one (see picture below). When I try to archive the data, I get two conflicts so XNAT really thinks these duplicate sessions are the same.

Just before I send each DICOM file using pynetdicom, I update its header using pydicom as follows:

p = pydicom.dcmread(f)

p.PatientComments = f'Project: {project_id} Subject: {subject_id} Session: {session_id}'

association.send_c_store(p)

I was wondering what other DICOM attributes XNAT reads that cause it to identify two sessions instead of only one. 

Any hints are greatly appreciated!

Ralph

Note: I'm using XNAT 1.8.2, build 3

[Moore, Charlie]

Hi Ralph,

I would double check that (0020,000D) Study Instance UID is the same for every file in your session. If that's not true, that would cause this behavior.

Thanks,

Charlie

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From: xnat_di...@googlegroups.com <xnat_di...@googlegroups.com> on behalf of Ralph Brecheisen <ralph.br...@gmail.com>
Sent: Thursday, February 3, 2022 3:41 AM
To: xnat_discussion <xnat_di...@googlegroups.com>
Subject: [XNAT Discussion] C_STORE of single image session results in two session items in pre-archive

 

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[Ralph Brecheisen]

Thanks for the info!

Op donderdag 3 februari 2022 om 16:29:24 UTC+1 schreef moore.c: