Is `PAM50_label_spinal_levels.nii.gz` used?

[jcohenadad]

Searched this string on:

• [x] https://github.com/search?q=repo%3Aspinalcordtoolbox%2Fspinalcordtoolbox+PAM50_label_spinal_levels.nii.gz&type=issues
• [x] https://github.com/search?q=repo%3Aspinalcordtoolbox%2FPAM50%20PAM50_label_spinal_levels.nii.gz&type=code
• [x] SCT forum:

I guess it is safe to remove?

[jcohenadad]

It was added there: https://github.com/spinalcordtoolbox/PAM50/blob/c60362d5b83118290f26dfbd10762429b9829df6/CHANGES.md?plain=1#L7

What for?

[jcohenadad]

Additional info: https://github.com/spinalcordtoolbox/PAM50/commit/59cb6fb2a68beeb5b96b08824c597ba482cce75e

Leading to: https://github.com/spinalcordtoolbox/spinalcordtoolbox/pull/2513 and https://github.com/spinalcordtoolbox/spinalcordtoolbox/issues/2509

[jcohenadad]

So, it is likely that PAM50_label_spinal_levels.nii.gz is useful, because we are now getting the spinal levels from the rootlet segmentation.

My suggestion then, would be to do the same as we do for vertebral/disc levels, ie:

• we have one file for spinal levels (labeled segmentation)
• and one file for spinal level labels (one pixel per level)