Hi
> Dear Experts,
>
> I'm trying whole brain tractography with FDT.
> I finished preprocessing (eddy current correction, BET, BEDPOSTX), and got diff2standard, staandard2diff matrix after registration.
> There are few things to ask.
>
> 1) Is tractography possible in diffusion space, but not in standard space?
> I ran registration to DTI data for fiber tracking in standard space, but I found 'seed space is not diffusion' and 'select Seed to diff transform' option.
Tractography is possible in any space you want - see FSL wiki for information on this.
>
> 2) Should seed mask transformed to diffusion space?
> Could it be done with matrix files obtained by DTI data registration?
Yes.
>
> 3) And I wonder what 'select diff to Seed transform' is for.
> It pops out when I select nonlinear option.
Yes the nonlinear option needs both forward and backward transforms to improve execution time.
Cheers
Saad
>
> Thanks,
>
>
> YM Huh
>
--
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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