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You can try something like
mri_volsynth --dim 1 1 1 1 --vox-size size size size --p0 x y z --pdf
const --o voxel.mgz
where size is the size of the MRS voxel
x y z are the center of the voxel in scanner space
Load voxel.mgz onto the anatomical to make sure it is in the right place
On 8/22/2023 11:28 AM, Lauren Stephens wrote:
External Email - Use Caution
Dear FreeSurfer,
I am trying to extract tissue composition of %GM, %WM, and %CSF from a
Freesurfer processed brain. I have the coordinates for the voxel but
do not know how to place a voxel on the brain in FreeSurfer before
running mri_compute_volume_fractions. Can anyone provide direction on
how to do this in FreeSurfer using a Mac running Ventura 13.4.1?
Thank you,
Lauren Stephens
*Lauren Stephens, MS*
Assistant Clinical Research Coordinator
Department of Psychiatry and Behavioral Science
*Stanford University School of Medicine***
E: laure...@stanford.edu
P: (650)-725-1716
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