[Freesurfer] including missing gray matter voxels

I am trying to figure out how to manually expand the pial surface boundary (generated via automatic segmentation with recon-all) to include additional gray matter voxels which have been erroneously labeled as skull or CBF.

i found extensive documentation on how to delete voxels (for example from white matter mask), but i can't seem to find relevant information advising how to manually include some missing gray matter voxels (on either ends of the cortex - i.e. white matter/gray matter boundary or gray matter/pial surface boundary).

Any help would be appreciated.

-- Kendrick Kay, PhD Assistant Professor Center for Magnetic Resonance Research University of Minnesota, Twin Cities Web: http://cvnlab.net http://cvnlab.net/ E-mail: kay@umn.edu mailto:kay@umn.edu Cell: 510-206-1059 Skype: kendrickkay