Use the mri.2mm aseg.mgz, eg,
mri_binarize --i aseg.mgz --match 7 8 46 47 --dilate 1 --o cblummask.mgz
This will make a mask of cerebellum GM and WM and dilate it by 1 voxel.

On 7/26/18 4:49 PM, Piero Chiacchiaretta wrote:

External Email - Use Caution

Dear FS group,
I would like to restrict mri_glmfit analysis, on FS-FAST outputs, to the cerebellum.
Thus, I’m using —mask, adding the mask of cerebellum.
To this aim I can obtain it using mri_binarize. Do you agree?
mri_binarize --i ... --match 8 --o Left_Cerebellum.nii.gz
mri_binarize --i ... --match 45 --o Right_Cerebellum.nii.gz
Which is the correct input? aparc+aseg in fsaverage? In which dimension? mri.2mm? mri?
Thanks

Piero
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