Moving the center of the initial sphere ( -c X Y Z ) closer to the front of
the brain might help.
Peace,
Matt.
-----Original Message-----
From: FSL - FMRIB's Software Library [mailto:[log in to unmask]] On Behalf
Of Xue, Feng
Sent: Monday, March 22, 2010 10:32 PM
To: [log in to unmask]
Subject: Re: [FSL] BET in infants
Hi,
Many be you could try draw a mask on the T1 image in fslview then mask
out those regions. But this may means a lot of labor as I did before:(
I wonder if anyone have other good idea?
On Tue, Mar 23, 2010 at 12:21 AM, Michael Yoong <[log in to unmask]>
wrote:
> Does anyone have any tips on using BET to skull strip T1 weighted scans in
> very young children (under 6 months)?
>
> I have been adjusting the intensity settings and got a reasonable result
> with -R -f 0.7, but there is a persistent small patch of skull remaining
in
> the occipital region of every child under 6 months. I would like to
improve
> on this, as it messes up any co-registration I then go on to do (I also
> would like to get measurements for brain volume).
>
> Are there any other settings that people have found useful to tweak in
this
> situation?
>
> I am also having trouble getting a satisfactory brain extraction on some
> other scans with more severe abnormalities - is there any way to mask out
a
> region so that it is ignored by BET? (A couple of the children have had
> previous neurosurgery for VP shunt insertion and the edges of the surgical
> lesion are not dealt with very well by BET.
>
> Many thanks,
>
> Michael
>
--
Best Regards
Xue, Feng Phd. candidate
Major in Developmental Cognitive Neuroscience
National Key Laboratory of Cognitive Neuroscience and Learning
Beijing Normal University
Beijing, China. 100875
Tel: +86-13810154455
web: http://psychbrain.bnu.edu.cn
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