probably youu'll want to sample it in the middle of the cortical ribbon, so --projfrac 0.5

Thank you for the response

It is FDG SUV map

need more info, eg, what kind of map is that? what modality?

-------- Original Message --------

Subject: mri_vol2surf

Local Time: August 22, 2017 11:04 AM

UTC Time: August 22, 2017 3:04 PM

From: John.anderso@protonmail.com

To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>

Dear FS experts,

I ran voxel-wise analysis between two groups using randomise in FSL and the final statistical maps is as attached.

 I aim to to repeat the analysis using surface based analysis. I followed the steps as in wiki. I am not sure what is the correct value for projfrac int he command "mri_vol2surf"  that is more appropriate to show the findings that I have in the voxel-wise (more int eh white matter) on surface.

Thank you for any suggestion

John

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