Hi Florian,
I am not sure whether the resolution could play a role
in this missegmentation. The best thing to do is to
upload one set of image
(http://www.fmrib.ox.ac.uk/cgi-bin/upload.cgi) that is
failing and I will have a look at it...
Cheers,
Gwenaelle
--- Florian Schubert <[log in to unmask]> a écrit
:
> Dear fsl experts,
>
> is there a minimum resolution necessary for
> successful segmentation?
> I understand that, using default settings, the
> output of the fast
> segmentation module is designated 0 (eg
> ~_FAi_brain_pve_0) for csf, 1 for
> gm, 2 for wm. When trying to analyze my T1-weighted
> images I get wm as 0 and
> csf as 2. Can anyone explain how this can happen?
> Does it reflect some
> segmentation failure? The gm-images do not look
> particularly well.
> The input is 79x95x79 (downsampled, space outside
> the head already stripped
> off, 2mm isotropic). Bet has been performed.
> I am actually aiming at fsl-vbm analysis of a larger
> set of such data and am
> afraid that this 'failing' segmentation may not give
> the best input for this
> purpose. Maybe the resolution is too low?
>
> Thanks & regards,
> Florian
>
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