[Bug] Dicom enhanced split in multiple files only load the first instance.

[ThomasLempereur]

Describe the Bug

Hello !
I'm currently trying to view a CT multiframe enhanced series with the version 3.7.0. But it only load the frames of the first instance.
My series contains 1344 frames split in 8 files/instances.
For each instance I have as metadata (that sounds important in this case):

• the NumberOfFrames (with a value of 168 because it's the number of frame by multiframe image)
• the InstanceNumber (1 to 8 depending of the instance)

Do I miss something ? A special tag that needs to be set / mandatory in the qido or metadata call ? or is it not supported ?

Thanks in advance !

Thomas :)

Steps to Reproduce

It happens like this while I'm calling my series:

1. /api/dicom-web/studies/1.2.3/series?SeriesInstanceUID=4.5.6 -> [{SERIES_METADATA}]
2. /api/dicom-web/studies/1.2.3/series/4.5.6/metadata -> [8 elements, each instance metadata]
3. frame calls only for the first instance for each frames. /1 ... /168
4. and then nothing, no error, no more call

The current behavior

the viewer only asks for the frames of the first instance despite the 8 instances metadata retrieved.

The expected behavior

I expected 8 * 168 calls of frames. (and reproduced with a smaller one).

OS

Windows 11

Node version

20.11.1

Browser

Brave 1.70.117 chromium: 129.0.6668.59