Hi Aga,
I'd say a priori that it should not affect your VBM analysis. You're definitely better off having a bit too much (dura etc.) than cropped grey matter.
The important thing is to check whether this has impacted on the non-linear registration. If this has not, then it doesn't really matter...
Cheers,
Gwenaelle
> Date: Mardi 24 mai 2011, 16h06
> Dear FSL experts,
> We are having a problem to get a "perfect" bet for our vbm
> analysis. If we
> play with different parameters, we get less brain missing
> but more dura or
> optic nerve included. How does this affect further
> analysis? Are those parts
> usually successfully removed during the segmentation?
>
> Thank you a lot for your advice,
> Aga
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Gwenaëlle Douaud, PhD
FMRIB Centre, University of Oxford
John Radcliffe Hospital, Headington OX3 9DU Oxford UK
Tel: +44 (0) 1865 222 523 Fax: +44 (0) 1865 222 717
www.fmrib.ox.ac.uk/~douaud
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