[Mristudio-users] fiber tracking with parcellation map

[Susumu Mori]

If you saved FA + eigenvectors, you don't need a tensor image.
If you don't have FA + eigenvectors, you can load a tensor image, from
which FA and eigvenvectors are recreated.

The purpose of DiffeoMap is to warp the parcellation map to the subject
images. For the accurate warping, both the subject and atlas are better
skull stripped as you did. Once the parcellation maps are brought to
subject images, the subject images do not have to be skull stripped for
fiber tracking.


On Mon, Oct 14, 2013 at 12:03 PM, Shao, Huiyan <huiyan.shao at ttu.edu> wrote:

>  Dear DTIstudio, ROIeditor, and DiffeoMap users,
>
>  I aim to do the fiber tracking using DTIstudio. In order to target the
> ROI, I decide to use the parcellation map. So I used ROIeditor and
> DiffeoMap to operate the skull stripping, resampling, linear normalization
> and non-linear normalization process. Now I have come across a difficulty
> when it comes to the last step. It said there are two choices to do the
> fiber tracking: one is using principal vector and FA map, and the other is
> using tensor images. Does it mean that I should do all the skull
> stripping, resampling, linear normalization and non-linear normalization for
> the tensor images or eigenvector-0 and FA?
>
>  Hope to get your reply. Thanks.
>
>  Huiyan
>
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