Fw: Discrepancy between mris_preproc and mri_surf2surf results when mapping individual's measures to fsaverage space
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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:tyzhang@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
oops, should have read your 2nd email. Yes, jacobian is the reason
On 3/20/2024 5:34 AM, tyzhang@ibp.ac.cn wrote:
External Email - Use Caution
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:*tyzhang@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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