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Dear FreeSurfer Experts,
Sorry, I think I've found the answer. It's because Jacobian correction was
performed for mris_preproc, right?
Tongyu Zhang
-----原始邮件-----
发件人:tyzh...@ibp.ac.cn
发送时间:2024-03-20 16:31:23 (星期三)
收件人: freesurfer@nmr.mgh.harvard.edu
抄送:
主题: Discrepancy between mris_preproc and mri_surf2surf results when mapping
individual's measures to fsaverage space
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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