This command will allow you to have a registration file and sample into MNI152 2mm space

mri_vol2vol --gcam pet.nii.gz register.dof6.lta $SUBJECTS_DIR/$subject/cvs/final_CVSmorph_tocvs_avg35_inMNI152.m3z $FREESURFER_HOME/subjects/cvs_avg35_inMNI152/mri.2mm/register.lta 0 1 pet.cvs.2mm.sm00.nii.gz

you can get the registration file with mri_coreg --mov pet.nii.gz --s $subject --reg register.dof6.lta

On 7/26/2020 9:19 AM, Zollei, Lilla,Ph.D. wrote:

Hi Aldo, If you have a recon-ned structural MRI corresponding to your PET scan then the answer is yes. Lilla

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*From:* freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Camargo, Aldo ACamargo@som.umaryland.edu *Sent:* Saturday, July 25, 2020 12:19 AM *To:* Freesurfer support list freesurfer@nmr.mgh.harvard.edu *Subject:* [Freesurfer] Coregistration to MNI

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Hi Freesurfer experts,

I want to coregister a PET image to the MNI space, can I use mri_cvs_register ?

Thanks a lot,

Aldo Camargo

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