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spinal-cord-7t / coil-qc-code

7T Spinal Cord Coil QC Analysis Code
https://spinal-cord-7t.github.io/coil-qc-code/README.html
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sct_flatten_sagittal changes the dynamic range of the image #83

Open evaalonsoortiz opened 4 months ago

evaalonsoortiz commented 4 months ago

@jcohenadad, at ISMRM you recommended we flatten the spinal cord into the sagittal plane (https://github.com/spinal-cord-7t/coil-qc-code/issues/65) for better visualization of B1+ and SNR maps. I've implemented this here: https://github.com/spinal-cord-7t/coil-qc-code/commit/e6ac4b386a33ded3614fb6ccff742dd97e1c7330

https://github.com/spinal-cord-7t/coil-qc-code/blob/e6ac4b386a33ded3614fb6ccff742dd97e1c7330/data_processing-human.ipynb#L806-L812

However, it appears that sct_flatten_sagittal changes the dynamic range of the image. Is this normal?

The below image shows the pixel values for reference:

Screen Shot 2024-06-26 at 10 55 17 AM
jcohenadad commented 4 months ago

it appears that sct_flatten_sagittal changes the dynamic range of the image. Is this normal?

Oops! not normal (I think). Issue opened https://github.com/spinalcordtoolbox/spinalcordtoolbox/issues/4548. Thank you for reporting it!