When working with area, you need to turn on jacobian correction.
mris_preproc will do this automatically, but you have to add --jac to
mri_surf2surf explicitly
On 3/20/2024 4:31 AM, tyzh...@ibp.ac.cn wrote:
External Email - Use Caution
Dear FreeSurfer Experts,
I'm currently working on mapping cortical morphometric measurements
from each individual in the HCP dataset to the fsaverage space.
I have noticed that both the mris_preproc and mri_surf2surf commands
can achieve this function. However, I found that the vertex-level
measurements for cortical thickness, sulcal depth, and curvatures are
consistent between these two commands, but the results for surface
area and gray matter volume are totally different.
I am puzzled by this inconsistency and speculate that perhaps these
two commands are calculated on different surfaces? I don't understand
why the two commands get different results since the inputs are the same.
My command are as follows: (Different surface area values will be
obtained in lh.area.fsaverage.mgh and lh.area.fsaverage.gii files)
mris_preproc --s id --meas area --target fsaverage --hemi lh –out
/Results/CorticalFeatures/id/lh.area.fsaverage.mgh
mri_surf2surf --srcsubject id --trgsubject fsaverage --hemi lh --sval
/HCP/id/surf/lh.area --tval
/Results/CorticalFeatures/id/lh.area.fsaverage.gii
Thank you so much!
Tongyu Zhang
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