[Bug] Regression handling RGB in XC modality

[fedorov]

Describe the Bug

This sample is no longer rendered correctly: https://viewer.imaging.datacommons.cancer.gov/v3/viewer/?StudyInstanceUIDs=1.3.6.1.4.1.5962.1.2.0.1677425356.1733

For comparison, see how it used to work here: #3354 (comment):

To download the files in that study (note - it is ~233GB!), assuming you have python and pip on your system, do the following:

pip install --upgrade idc-index
idc download 1.3.6.1.4.1.5962.1.2.0.1677425356.1733

Steps to Reproduce

Load the sample study referenced in the above into the viewer.

The current behavior

First series shows grayscale with multiple slices arranged in a mosaic. Second does not load at all.

The expected behavior

Both should show up in color as used to work in the past given the screenshot in #3354 (comment)

OS

macOS

Node version

n/a

Browser

Chrome

[sedghi]

For instance, if I want to debug this specific study without downloading it, how can I do that in my local OHIF since you said the DICOMweb server is public?

CC @igoroctaviano

[fedorov]

@sedghi I am not an OHIF developer, so I cannot answer how to do it in OHIF configuration (@igoroctaviano can), but IDC public DICOMweb endpoint is this: https://proxy.imaging.datacommons.cancer.gov/current/viewer-only-no-downloads-see-tinyurl-dot-com-slash-3j3d9jyp/dicomWeb (documented in https://learn.canceridc.dev/portal/proxy-policy). Note that the "no downloads" wording in the URL is legacy, and we do not restrict that DICOMweb endpoint for downloads - as discussed in the link above.

[fedorov]

DICOM PlanarConfiguration will indicate whether color image is ordered as RGBRGB or RRGGBB. Need to investigate.