hmmm, not exactly sure what you mean, but the aseg is corrected with the
topologically corrected surfaces. Note that sampling them into the volume
can change the topology though

On Mon, 2 Oct 2017, angel angel wrote:

> I see. By the way is aseg.mgz the segmentation after surfaces ? I mean if the topology correction is
> considered. Thank you!
>
> On Sunday, October 1, 2017, Bruce Fischl <fischl@nmr.mgh.harvard.edu> wrote:
>       you can't get an accurate estimate of sulcal CSF from just a T1 as you can't distinguish
>       it from other things that are dark, so we don't geenerate a label for it
>
>       cheers
>       Bruce
>       On Sun, 1 Oct 2017, angel angel wrote:
>
>             Dear FreeSurfer Experts,
>             I'm so new to the FreeSurfer. I have seen the CSF segmentation which is
>             inside the ventricles in
>             aseg.mgz  but i couldn't see the peripheral CSF (the csf outside of cortex).
>             I'm wondering how can i
>             have it or probably its label?  
>             Thank you! 
>
>
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