Hi,

I just finished reconall and now I'd like to convert the aseg.mgz to native functional space.
My first thought was to simply convert the aseg.mgz to native functional space with mri_vol2vol:
mri_vol2vol --mov sub001/mri/aseg.mgz --targ example_func.nii.gz --o aseg-in-rawavg.nii --regheader

Is this a valid procedure to convert the aseg to functional space?

I think the recommended way is to register the example_func to anatomical first:
bbregister --mov example_func.nii.gz --s sub001 --reg reg.dat
and then use mri_vol2vol with the --inv flag
mri_vol2vol --mov sub001/mri/aseg.mgz --targ example_func.nii.gz --o aseg-in-rawavg.nii --regheader --inv

But I'm not sure... Could someone confirm which of the above  (or maybe none of them) is correct?

Best regards,

Sam