[Freesurfer] Transformation of volume images

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Dear developers,

please, may I ask you how I can transform volume images (containing discrete region labels) from the fsaverage space into the space of a given subject, and vice-versa?

I tried the following command: mri_vol2vol --interp nearest --mov fsaverage/mri/aseg.mgz --o test_mask.mgz --s test001 --targ test001/mri/orig.mg

or mri_vol2vol --interp nearest --mov fsaverage/mri/aseg.mgz --o test_mask.mgz --targ test001/mri/T1.mgz --lta test001/mri/transforms/talairach.lta --m3z talairach.m3z --s test001

but there was always a large mismatch between the transformed images and the target image.

Best regards, Peter