Have you verified that your diffusion lines make anatomical sense? Use the
lines display in FSLView and look at the corpus callosum in axial and
coronal sections, and the corona radiata in sagittal section. The lines
should appear to follow a smooth pattern, rather than 180 degrees opposite.
Peace,
Matt.
-----Original Message-----
From: FSL - FMRIB's Software Library [mailto:[log in to unmask]] On Behalf
Of Cherif Sahyoun
Sent: Wednesday, January 14, 2009 11:32 AM
To: [log in to unmask]
Subject: Re: [FSL] PROBTRACKX related question
Hi Oded,
Can you give more details about exactly what you did and the
parameters you used?
Thanks,
Cherif.
----------------------------------------------------------------------------
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Cherif P. Sahyoun HST-MEMP
Developmental Neuroimaging of Cognitive Functions
C: 617 688 8048
H: 617 424 6956
[log in to unmask]
"Live as if this were your last day. Learn as if you'll live forever"
Gandhi
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On Wed, Jan 14, 2009 at 9:20 AM, Oded Cohen <[log in to unmask]> wrote:
> Hi,
>
> I have question about the using PROBTRAKS. When tracking from single seed
> mask (for example the dorsal Amygdala) the tracks that are calculated for
my
> data-set seems to be of reduced quality compared to the FSL course sample
> data (FDT \ subject1). The tracks are confined to a smaller volume and in
> general do not go all the way to the cortex ( much nicer tracks image is
> calculated on the sample data). I would like to ask for your advice on
that:
> May this reduced quality be associated with voxel size ( 3mmX3mmX3mm) or
> number of scanned directions (19). May this be related to the transfer to
> the standard space?
>
> many thanks in advance,
>
> Oded
>
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