Dear Freesurfer team,

I am quality-checking the segmentation work from FreeSurfer version 7.1 and I have a  subject whose white matter mask I cannot edit. I wonder why is this happening?

The white matter mask has a lot of holes and the brush does not work over them. I know the brush is working because I have been editing other white matter masks but this subject is different.

Any help would be appreciated

My best regards,

Rosie