You can ask it to sample the maximum along the surface normal over a certain distance. Use --projdist-max. Run mri_vol2surf --help for more info

On 9/27/2019 2:04 PM, Albrecht, Daniel S. wrote:

Hello everyone,

I've been using mri_vol2surf to move some activation data in MNI space to the fsaverage surface with the following command:

mri_vol2surf --mov MNIvol.nii --projfrac-max 0 1 0.1 --hemi rh --o rh.out.mgz --mni152reg

This works well, but I'm losing a small temporal gyrus cluster that sits close to pial surface. I was assuming this was due to the proximity to the pial surface and resampling, but are there any other options or flags I could use to get this to project successfully?

Thanks very much,

Dan
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