yes that's right.
saad.
On 21 Jun 2011, at 10:49, romain quentin wrote:
> Thank you for the response!
> So, the best way to have a probability of connection whatever the direction of trajectories between two areas A and B is:
> Probtrack 1: Single Mask A, waypoint B + termination B and Probtrack 2: Single mask B, waypoint A + termination A, isn't it?
> Then average the two fdt_paths (what I understand the multiple mask does).
> Cheers,
> Romain
> Le 21 juin 2011 à 14:49, Saad Jbabdi a écrit :
>
>> Hi Romain
>> If you want to use several termination masks, you need to add them up into a single mask using fslmaths.
>>
>> You cannot do that while seeding from the same masks, as the streamlines will not leave your seed masks by definition of a termination mask. If you want to seed from two rois while having them as termination, you need to run probtrackx twice.
>>
>> Cheers,
>> Saad.
>>
>>
>> On 21 Jun 2011, at 07:01, romain quentin wrote:
>>
>>> Dear FSL experts,
>>> I Have Two questions about probtrack.
>>> Is it possible to put several "termination mask" when launching probtrack? Or should it be the sum of our "termination mask" in a single image to use? For example, a mask of FA plus a ROI waypoint.
>>> And, if using multiple mask, which seems more appropriate to give us an overall estimate of the connectivity between two areas, one can use a "termination mask" which includes the two areas into a single image?
>>> many thanks,
>>> Romain
>>
>> --
>> Saad Jbabdi
>> University of Oxford, FMRIB Centre
>>
>> JR Hospital, Headington, OX3 9DU, UK
>> (+44)1865-222466 (fax 717)
>> www.fmrib.ox.ac.uk/~saad
>
> Romain QUENTIN
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> 06 80 33 15 74
>
--
Saad Jbabdi
University of Oxford, FMRIB Centre
JR Hospital, Headington, OX3 9DU, UK
(+44)1865-222466 (fax 717)
www.fmrib.ox.ac.uk/~saad
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