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I would like to get a tac file of the ROI averages at the surface for each subject.
From: Douglas N. Greve dgreve@mgh.harvard.edu Date: Thursday, June 19, 2025 at 12:38 PM To: freesurfer@nmr.mgh.harvard.edu freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] Re: PetSurfer surface-based SUVR What do you mean by extract here? What do you want? A map of SUVR? A group map or the individual maps? Or do you want ROI averages? If so for the group or individually? On 6/17/2025 1:25 PM, Mia Anthony wrote:
External Email - Use Caution Just to clarify: mris_fwhm or mri_glmfit is the last command I need to run? Can I extract SUVR values from all.lh.mgx.ctxgm.fsaverage.sm05.nii.gz?
Thank you
From: Douglas N. Greve dgreve@mgh.harvard.edumailto:dgreve@mgh.harvard.edu Date: Wednesday, June 11, 2025 at 4:01 PM To: freesurfer@nmr.mgh.harvard.edumailto:freesurfer@nmr.mgh.harvard.edu freesurfer@nmr.mgh.harvard.edumailto:freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] Re: PetSurfer surface-based SUVR That is all you need to run! On 6/6/2025 8:19 PM, Mia Anthony wrote:
External Email - Use Caution Hello FS,
I have calculated regional SUVR and would like to calculate SUVR on the surface. I have followed the wiki tutorial, including PVC, through smoothing on the surface. The last commands I ran are:
mris_fwhm --smooth-only --i all.lh.mgx.ctxgm.fsaverage.sm00.nii.gz --fwhm 5 --o all.lh.mgx.ctxgm.fsaverage.sm05.nii.gz --cortex --s fsaverage --hemi lh mris_fwhm --smooth-only --i all.rh.mgx.ctxgm.fsaverage.sm00.nii.gz --fwhm 5 --o all.rh.mgx.ctxgm.fsaverage.sm05.nii.gz --cortex --s fsaverage --hemi rh
Do I need to run the mri_glmfit command? For example: mri_glmfit --y all.lh.mgx.ctxgm.fsaverage.sm05.nii.gz --surface fsaverage lh --fsgd g1v0.fsgd mri_glmfit --y all.lh.mgx.ctxgm.fsaverage.sm05.nii.gz --surface fsaverage rh --fsgd g1v0.fsgd
Will the mri_glmfit output provide surface-based SUVR, or will I need to run additional commands after?
Thank you, Mia
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