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I tried to follow this web page https://surfer.nmr.mgh.harvard.edu/fswiki/PairedAnalysis

This tutorial seems to be for cortical thickness data. After sampling each individual's surface onto the average surface, how can I modify this command to fit PET data  

mris_preproc --target fsaverage --hemi lh \
   --meas thickness --out lh.paired-diff.thickness.mgh \
   --fsgd pairs.fsgd --paired-diff

Thanks for any help!

John

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

On Tuesday, November 20, 2018 6:34 PM, john Anderson <John.anderso@protonmail.com> wrote:

Dear Freesurfer experts,

I would like to run surface based paired  t test of PET data on surface. For every subject I have visit pre treatment and post treatment. I tried to follow the instructions here https://surfer.nmr.mgh.harvard.edu/fswiki/PairedAnalysis but the toturial seems to be for cortical thickness data.

How can i modify the command mris_preproc to do paired test of PEt data on brain surface

 mris_preproc --target fsaverage --hemi lh \
   --meas thickness --out lh.paired-diff.thickness.mgh \
   --fsgd pairs.fsgd --paired-diff

thanks for any suggestion

John