[Freesurfer] Editing pial surface

Dear all,

I am trying to edit the pial surface by editing/deleting voxels in the brain volume within the pial surface ('labeled' as a part of cortex), but clearly are parts of dura when manually inspected. When I rerun the last automatic procedures (fix, make_final, morph), and check the pial surface, nothing has appeared to have changed. The voxels I deleted are gone, though the pial surface still looks the same.

How can I fix this without having to regenerate/reconstruct all my subjects? (I have approx. 100). Any tip?

I am by the way using the Freesurfer version from june (?) 2005, and due to time restrictions I am not considering changing to the latest version for this project.

Thanks a lot!

Best wishes,

Lars Tjelta Westlye University of Oslo