Fmriprep - T1 voxels not isotropic

Hi Chris,

Thanks for the info RE metadata and fMRIPrep. I’ll definitely update the JSON files for posterity.

I’m working with clinical MRI data and will be drawing lesions on the T1 anatomical image. It’s difficult to accurately draw the lesions on a T1 with voxels that are vastly different in size.

Also I apply the T1-to-MNI space transformation matrix (output by fmriprep) to the lesion file to normalize the lesion to MNI space using ANTs (described here: Fmriprep – Failed normalisation with lesion mask - #12 by sandrushba).

It’s ideal to use the isovoxeled T1 brain in fmriprep in order to normalize the lesion. If I didn’t have to draw and normalize the lesion then I would leave the T1 voxels alone.

FG

1 Like