Present (in BOLD):

• NASA/JPL: Dan Crichton, Sean Kelly, Heather Kincaid, Ashish Mahabal
• Arizona State University: Ji Qiu
• Boston University: Jennifer Beane
• EVMS/Old Dominion: Julius Nyalwidhe
• DMCC: Jackie Dahlgren, Chad He, Royce Malnik, Stephanie Page-Lester, Suzanna Reid
• Johns Hopkins: Zhen Zhang
• Moffitt: Matt Schabath, John Heine, Yoga Balagurunathan, Radka Stoyanova
• NCI: Sidney Fu, Guillermo Marquez, Christos Patriotis, Juan Miguel Villanueva
• PNNL: Tao Liu
• University of California: William Hsu
• University of North Carolina: Kristen Anton
• University of Washington: Savannah Partridge 

Current Action Items:

1. ONGOING: PIs are asked to review their data in LabCAS and let JPL know of any issues. Update:  Dan Crichton reminded PIs to let the know about any new data they want to send to JPL and to make sure their data is updated in LabCAS.
2. ONGOING: Discuss roadmap for additional hackathons and workshops.
3. Federated Learning: Matt Schabath and Eugene Koay may present on this topic at a future meeting.  Heather Kincaid is working on scheduling this presentation.

Agenda/Discussion:

DICOM Validation Update

1. Define a minimal set of required DICOM header tags to make the DICOM imaging reusable and ready for EDRN while minimizing the burden to the sites.
2. This will also support header standard standardization and guide SOP development for the EDRN and imaging studies. Currently working with the P-MRI and LTP2 images.
3. There is a subgroup of EDRN investigators with a draft set of required core tags based on the TCIA requirements where a draft set of tags that will be updated during the ingest of those images using the MCC API and JPL workflows and a script provided by Radka Stoyanova, which checks the core tags and ensures proper formatting.
4. Currently have drafted a process for the sites on how to do deidentification. Next Steps include:
   1. Generating Validation Summary Reports
   2. Updated validation logic to reduce false positives
   3. Additional PHI/PII checks
   4. Draft PET-specific tag extension
   5. Updated blinding approach for image reference sets
   6. Next steps: DICOM subgroup call with LTP2 and PMRIs PIs
5. DICOM validation Script
   1. Checks all required Core tags plus CT, MRI or PT extensions
   2. Runs PHI/PII checks based on DICOM PS3.15 Appendix E:
      1. Possible validation errors or warnings
      2. Possible burned-in PHI/PII in pixels
      3. Possible PHI/PII in header attributes
6. Updated validation logic (profile routing)
   1. Testing approach
      1. Running the DICOM validation summary report on all LTP2 and PMRI images i in LabCAS
      2. Iteratively updating the script to reduce false positives
      3. Profile routing added to determine if a core tag is Required, Optional or Not Applicable
   2. Examples discussed using LTP2 CTs.  The group asked some questions.
7. Getting existing PMRI and LTP2 Data Ready
   1. Step 1: Finalize validation rules with the DICOM subgroup and PMR/LTP2 PIs.
   2. Step 2: Run verification on all PMRI and LTP2 images
      1. If PHI/PII is detected, delete affected images and request new uploads from the site
      2. If fails validation, repeat corrected images from the site.
   3. Step 3: Apply header updates and run header updates workflow (e.g. EventID, BlindedParticipant, VisitCode b-value on validated images

JPL believes the group is making a lot of progress.

Other Business: Register to attend 45th EDRN Steering Committee at EDRN MEETING REGISTRATION

Next Call: Monday, March 16, 2026 at 1pm Eastern/10 am Pacific