You can try

mri_compute_volume_fractions USAGE: mri_compute_volume_fractions

--o outstem : output will be outstem.{cortex,subcort_gm,wm,csf}.mgz --reg regfile : can be LTA or reg.dat (if reg.dat, then need template volume) --regheader subject . . .

Which should output a multi-frame MGH file where each frame is the volume fraction of (in order) cortical gm, subcortical gm, white matter, and csf.

Cheers Bruce

From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu On Behalf Of ERNEST KISSI Sent: Sunday, February 11, 2024 7:44 AM To: Freesurfer support list freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] Tissue Segmentation

External Email - Use Caution Hello freesurfer team,

Please does Freesurfer have a function or a code for tissue Segmentation just like in FSL that you can do tissue based segmentations into GM, WM and CSF and also their partial volume segmentations?

Thank you.