Ultrasound Studies Open Very Slowly in OHIF Viewer via Orthanc DICOMweb

General
1

Hello Orthanc Team,

We are experiencing a performance issue when opening Ultrasound studies through OHIF Viewer connected to Orthanc via DICOMweb.

Issue:
Ultrasound studies take a considerable amount of time to open in OHIF Viewer. In some cases, users wait several seconds before images begin loading. This affects clinical workflow and user experience.

Observations:

  • The issue is mainly noticeable with Ultrasound studies.
  • Once loaded, navigation is generally acceptable.
  • We would like to understand whether this could be related to:
    * DICOMweb performance
    * PostgreSQL indexing/query performance
    * Large metadata retrieval
    * Orthanc configuration
    * Viewer-side rendering

Could the Orthanc team please advise:

  1. Are there recommended optimizations for large Orthanc installations?
  2. Are there known performance considerations specific to Ultrasound studies?

Any guidance would be greatly appreciated.

2

Hello @jemitsanghvi - may you please post some details about your setup? configuration files for OHIF and Orthanc, docker settings if they’re containers, server specs, Orthanc /system stats

3

And you should also check the size of the US files. Many of them are 200-300 MB and they just need time to be downloaded …