DICOM Viewer Failing to Recognize .dcm Files - Troubleshooting Exhausted

ℹ️ Support
1

Hi everyone,

I’m at my wit’s end trying to get DICOM files to open correctly in my Nextcloud instance. Despite extensive troubleshooting, the DICOM viewer app doesn’t seem to recognize or open .dcm files.

My Setup:

  • Nextcloud version: [Your Nextcloud version]
  • DICOM viewer app: [DICOM viewer app name and version]
  • Environment: Running Nextcloud in a Docker container with [Docker image name and version] on [Your operating system].
  • Web server: [Your web server, e.g., Apache, Nginx]

Troubleshooting Steps Taken:

I’ve tried everything I could find, including:

  • DICOM Viewer App: Installed, removed, and reinstalled the app multiple times.
  • MIME Type: Manually added the DICOM MIME type (dcm => application/dicom) to config.php.
  • App Management: Disabled and re-enabled both the files_external and dicomviewer apps.
  • System Restart: Restarted the entire system and the Nextcloud server.
  • Browser Cache: Cleared browser cache and cookies.
  • File Integrity: Verified the integrity of the DICOM files using an external viewer.
  • Conflicting Apps: Checked for any conflicting image viewer or file preview apps.
  • Alternative Files: Tested with different DICOM files.
  • Log Analysis: Inspected Nextcloud and web server logs for any errors, but found nothing relevant.

Current Behavior:

  • When I click on a .dcm file in Nextcloud, it either gets downloaded directly or an error message appears.
  • The DICOM viewer app doesn’t seem to activate or recognize the file type.

Possible Causes:

  • Compatibility Issues: Potential compatibility problems between the DICOM viewer app, my Nextcloud version, or the Docker environment.
  • App Bugs: Possible bugs or limitations in the DICOM viewer app itself.
  • Configuration Errors: Despite my efforts, there might be some hidden configuration errors that I’m overlooking.

Questions:

  • Has anyone else experienced similar issues with the DICOM viewer app?
  • Are there any known compatibility issues or workarounds?
  • Are there alternative DICOM viewer apps or methods for integrating external viewers with Nextcloud?

Any help, suggestions, or insights would be greatly appreciated.

Thanks!

2

What’s the error message?

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