You can follow the instructions here for the case where you are not using kinetic modeling. You don't need to do the PVC either
https://surfer.nmr.mgh.harvard.edu/fswiki/PetSurfer
This command in particular, you just need to generate the registration and supply you input as the --mov

mri_vol2vol --mov subctxgm.nii.gz --reg aux/bbpet2anat.lta
--tal --talres 2  --o subctxgm.mni305.2mm.sm00.nii.gz

It can be used genericall

On 11/19/18 1:14 PM, john Anderson wrote:

External Email - Use Caution

Dear Freesurfer experts,

I have the mean PET images for a number of subjects in MNI152 space. For visualization purposes, I would like to map this mean image onto brain surface. How can I do it. I appreciate any suggestion you may provide.

Thanks!

John
_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer