I thought of that, but these atlases are gray matter atlases that don't cover white matter tracts. If I would combine the whole brain white matter skeleton (mask) with a gray matter atlas-based PFC mask, I would get a mask that covers the PFC gray matter and white matter plus white matter in the rest of the brain. Is there another way?

Maren

On Mon, Feb 25, 2013 at 12:16 PM, Mark Jenkinson <[log in to unmask]> wrote:

Hi,

You can use fslmaths to combine masks from the tbss skeleton and from any of the atlas images.
See the FSL documentation and FSL Course for more general information.

All the best,
Mark

On 25 Feb 2013, at 03:52, Maren Strenziok <[log in to unmask]> wrote:

> Can anyone please advise on making a prefrontal mask from a tbss-derived white matter skeleton?
>
> Thanks, Maren