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Hi FreeSurfer Experts,

I am tryinig to extract area from a volume-defined ROI. I used code from the FreeSurfer websiite (https://surfer.nmr.mgh.harvard.edu/fswiki/VolumeRoiCorticalThickness) to extract thickness, but I was not able to extract area. Here is my code for thickness:

mri_surf2surf --s ../../sub-004_session1 --trgsubject ../../fsaverage --hemi lh --sval lh.thickness --tval lh.thickness.fsaverage.mgh

mri_segstats --seg $SUBJECTS_DIR/../../fsaverage/label/lh.fsaverage.MFGbin.mgh --in lh.thickness.fsaverage.mgh --sum segstats-lh.thickness.MFGbin.txt

How do I modify to extract area?

Thank you!

Jessica