Hi Anastasia,
Many thanks for your reply and help. I was wondering that instead to redo all
the preprocessing and registration steps s mentioned on FSTutorial/Running
Tracula:
* Eddy-current correction
* Intra-subject registration (diffusion data to T1)
* Inter-subject registration (individual subject to a common space)
* Creation of cortical and white-matter masks from FreeSurfer recons
I can use all this results from my DTI Data Analysis Preprocessing Stream as
mentioned on the FSTutorial/Diffusion, by runningfirst the dt_recon (this is
performing an Eddy-current correction) and then I resampled structural data in
the Diffusion space (aparc+aseg2diff.mgz, wm2diff.mgz), then I applyed the
mask to the diffusion data and removed the unwanted "noise", using the
'mri_mask' command to get the masked fractional anisotropy volume
(fa-masked.mgz), adc-masked.mgz and then doing individual subject registration
on the CVA space and get resampled int CVS space
(fa-masked.ANAT+CVS-to-avg35.mgz) using the using mri_cvs_register.
I also have all the outputs mentioned under FSL's dtifit since I got them by
running dt_recon.
So I wonder if is possible to perform a DTI probabilistic tractography using
TRACULA by starting only from the last two steps mentioned in trac-all -prep:
* Computing anatomical priors for WM pathways, Recontructing WM
Pathways, then visualizing the WM pathways, and then doing only statistics.
This is what I meant by my previous results.
Thank you for your time and help.
Antonella
________________________________
From: Anastasia Yendiki <ayend...@nmr.mgh.harvard.edu>
To: Antonella Kis <ator...@yahoo.com>
Cc: "freesurfer@nmr.mgh.harvard.edu" <freesurfer@nmr.mgh.harvard.edu>
Sent: Wednesday, March 28, 2012 2:07 PM
Subject: Re: [Freesurfer] dt_recon and tractography
Trackvis does deterministic tractography, not probabilistic.
Which previous results do you want to use and why?
On Wed, 28 Mar 2012, Antonella Kis wrote:
> Dear FS experts,
>
> I would like to know if for a Diffusion tensor imaging (DTI) tractography
> study
> with TRACULA I can use my previous results from FSTutorial/Diffusion more
> exactly my results after running dt_recon and registrations on the CVS space.
> If not can you please advise me if for a DTI probabilistic tractography using
> my previous results as mentioned above I can use TracVis.
>
>
> Thank you.
> Antonella
>
>
>
>
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