Dear FreeSurfers,

 

I am interested in sampling values in the superficial white matter (SWM) region, which is an area of about 0.5mm below the GM/WM boundary.

 

To extract values of each vertex in that region, I have successfully used the mri_vol2surf function with the projfrac option, such as below:

 

mri_vol2surf --src <src_img> --out <output mgh file> --out_type mgh --hemi lh --projfrac -0.5 --regheader <recon-all output> --surf white --interp trilinear

 

However, I would also like to get surface type files (like lh.pial, lh.white, etc) that I could overlay on Freeview for visualization purposes.

 

I see papers with figures that have a visualization of surfaces below the GM/WM boundary, but I am not sure how I can obtain this.

I would really appreciate if anyone could give me any hints or suggestions on how I could do the same.

Thanks in advance!

 

Best regards,

Kristine

 

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