Looking for feedback: Open Source MWL SCU utility using fo-dicom

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Anders Dahlgren

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Jan 7, 2026, 10:18:39 AM (5 days ago) Jan 7

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Hi everyone,

I recently needed a lightweight tool to simulate a Modality Worklist SCU for testing purposes, specifically one that didn't require heavy runtime installations or complex setups.

I ended up building a small standalone utility using .NET 4.8 and the fo-dicom library. I’ve released it as Open Source (MIT License) in case it’s useful to anyone else here debugging RIS/PACS connections.

It currently supports:

Standard C-FIND queries (Patient, Accession, Date range, etc.).
TLS connections.
Customizable tag return views.
Basic Echo/Ping for connectivity checks.

I am looking for feedback from the community regarding the C-FIND request construction. If anyone has time to take a look, I’d be interested to know if I’m missing any critical return tags that are standard in your workflows, or if you encounter issues with specific PACS vendors.

The source code and portable executable are available here: https://github.com/droidgren/DMWLT4