Hmm... Is what remains after you threshold a continuous stream from
your seed to your target? your streamlines may have ventured where the
exclusion is and then converged back... Can you attach a (small) pic
with the masks and fdt_paths?
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Cherif P. Sahyoun HST-MEMP
Developmental Neuroimaging of Cognitive Functions
C: 617 688 8048
H: 617 424 6956
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"Live as if this were your last day. Learn as if you'll live forever"
Ghandi
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On Thu, Oct 30, 2008 at 5:46 PM, Ruth Carper <[log in to unmask]> wrote:
> Hi Cherif,
> I already looked into that. While there are some streamlines that intersect
> with the exclusion mask, the majority don't. When I load the paths that
> were created without the exclusion, and set the minimum voxel value
> reasonably high, I can see that the greater number of streamlines do not
> intersect the exclusion mask.
>
> --Ruth
>
>
>
> On Thu, 23 Oct 2008 18:57:35 -0400, Cherif Sahyoun <[log in to unmask]> wrote:
>
>>No, they don't need to be in the same plane...
>>The first thing I would try is run the tracking without the exclusion mask,
>>to see how many you get and if they would pass through the exclusion you're
>>thinking of using (just overlay the fdt_paths and the exclusion mask in
>>fslview).
>>You have to remember that the way the exclusion mask works is that any
>>streamline that touches any of the exclusion voxels gets excluded. Now if
>>they are very close, then maybe your samples wander too close and don't have
>>a chance to go anywhere after that...
>
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