Hi,
Have you tried modifying the number of iterations (-I) the
spatial MRF (-H) or the bias field smoothing (-l) ?
These parameters can all have a strong effect (as can some
of the other parameters too, but I'd start with the ones above).
It will help if you can identify what you think is going wrong.
Does the bias field look OK? It shouldn't show visible anatomical
detail, and the restored image should have a nicer histogram.
Are the results too smooth (decreasing -H might help) or maybe
not smooth enough (increase -H)?
Also - have you done brain extraction with BET? This is essential
for getting good results.
Finally, are you looking at the hard segmentations of the PVEs?
It is the PVEs that we recommend as the most useful outputs,
and these can look different than the hard segmentations around
the boundaries.
All the best,
Mark
On 24 Jan 2009, at 11:40, Oliver Trebbe wrote:
> Hello ,
>
> after i tried my method with the new FAST version, but the results
> are bad!
> so i suggesting using the old FAST version. (dont know what exactly
> changed, but the stuff im segmenting is bad clustert, not like id
> wanted it or guessed it..)
>
> So far
>
> --
> Oliver Trebbe
> Department of Neurology
> University of Muenster
> 48129 Muenster, Germany
>
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