Hi,
On 27 Oct 2007, at 21:33, Ying Chen wrote:
> Hi,
>
> I used T1 and T2 image set provided in FSL example data, and I did get
> four separate voxel maps which correspond to scalp, skull, brain
> and the
> region between brain and skull, respectively.
>
> Does the region between brain and skull represent cerebro-spinal
> fluid?
Yes.
> But the brain segmentation also includes an outer layer of CSF.
Yes, that's just because the BET brain surface is relatively smooth,
not having a _huge_ number of vertices, so there will be some CSF
within sulci inside the "brain" surface.
Cheers.
> So I am
> not sure what part of human head one of the voxel maps I am getting
> (the
> one between brain and skull) represents.
>
> Thank you!
>
> Ying
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Stephen M. Smith, Professor of Biomedical Engineering
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