[Freesurfer] details about surf2vol

Dear all,

I am hoping to use surf2vol to generate high resolution masks of the gray/white surface, so something like the following command:

mri_surf2vol --sd /subj/dir/ --identity subid --hemi lh --surf white --mkmask --o volume.mgz --template ./template.mgz

However I'm wondering about what exactly the algorithm does. I understand that the vertices are placed at the closest voxel in the template space. But does the algorithm take into account information about the faces/lines of the mesh in addition to the vertices? If so, how? If not, does that imply a limit to the resolution of the template space that should be used with the command?

Thanks very much in advance for any help.

Best, Aaron Alexander-Bloch PhD student, University of Cambridge