Re: [Freesurfer] Fw: Discrepancy between mris_preproc and mri_surf2surf results when mapping individual's measures to fsaverage space

2024-03-29 Thread Douglas N. Greve 

oops, should have read your 2nd email. Yes, jacobian is the reason

On 3/20/2024 5:34 AM, tyzh...@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:*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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[Freesurfer] Fw: Discrepancy between mris_preproc and mri_surf2surf results when mapping individual's measures to fsaverage space

2024-03-20 Thread tyzhang 
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: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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addressed.  If you believe this e-mail was sent to you in error and the e-mail 
contains patient information, please contact the Mass General Brigham 
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 .
Please note that this e-mail is not secure (encrypted).  If you do not wish to 
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