Hi there,

I would like to make a ROI for a left Substanci Nigra.

It is possible to make the ROIs for thalamus, putamen, caudate, etc.

But, it is not possible to make the left Substanci Nigra  ROI as follows: mri_binarize --i $SUBJECTS_DIR/$subj/mri/aparc+aseg.mgz --match 27 --o $SUBJECTS_DIR/L_substancia.nii.gz