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neuropoly / data-management

Repo that deals with datalad aspects for internal use
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Canproco - images with 4 dimensions #274

Open NathanMolinier opened 1 year ago

NathanMolinier commented 1 year ago

Description

For some subjects in the session ses-M12 niftii images have 4 dimensions:

tagging @plbenveniste and @valosekj

valosekj commented 1 year ago

Thanks! Good catch!

It seems that this particular 4D image contains two consecutively acquired 3D volumes (notice the slight motion between the volumes):

Kapture 2023-10-24 at 19 56 32

Possible solutions:

  1. split the 4D image into two 3D images (e.g., using sct_image) and use only one of them
  2. average the 4D image across the fourth dimension (time). But this is probably suboptimal since the resulting image might be blurred due to the movement between the 3D volumes.