Attached is an image that describes my issue. WM in the temporal region is being omitted after running recon-all. Most of the omitted voxels are in the 120-130 range. It's causing an issue with the underlying WM voxels as well, they've simply disappeared.

I can see how this voxel intensity limit would help omit dura, vessels, and other high intensity objects but in this case it's a bit of an issue and I'm not sure how to A) rectify it (I could replace the WM voxels?) B) keep it from happening again.

Is there a way to give freesurfer an intensity threshold to work with?

Please advise!

Jon