Hi Freesurfer team,

I am trying to use Freesurfer surfaces to do tractography in FSL. I extracted two ROIs, one of which is the output of the following command: label2surf –s lh.white.gii –o lh.prefrontal.gii –l lh.prefrontal.txt
and the other is the output of: mri_tessellate aseg.mgz 46 rh.cerebellum.wm

My question is how to convert these files to fsl-compatible surfaces usable for tractography

If I have to use surf2surf, I am not clear on how to do it. Should I change both the type and the convention of the images.

Thanks a lot,
Sara