No, you can do it with

mri_binarize --i aparc+aseg.mgz --match ID --o roi.ID.nii.gz

where ID is the parc id from the FreeSurferColorLUT.txt

On 04/28/2017 06:58 PM, VA Research wrote:
> Does freesurfer output individual roi volume masks for each of the
> cortical parcellations in aparc+aseg?
>
> thanks
>
> Joseph Veliz
> VA Hospital West LA
>
>

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