On Tuesday 13 May 2008 20:59, MCLAREN, Donald wrote:
> I'm trying to align some DTI data to T1 structural scans. The caveat
> is that I want to align the DTI to an affine transformed T1 image. Due
> to potential non-linear deformations in the DTI data, I came up with
> the following scheme:
>
> (1) Use normalize tool to compute the transform for the DTI to standard
> space (2) Use normalize tool to compute the transform for the T1 to
> standard space and its inverse
> (3) Using the deformation tool, Transform the DTI to T1 space (DTI.mat
> and T1_inv.mat)
> (4) Apply the linear component of the T1.mat transform to both files.
>
> The issue I am having is that I would like to avoid resampling the DTI
> data (step 3). Does anyone have any suggestions?
Not really, other warp the T1 to match the DTI. We don't do much DTI here in
the FIL, and there are no utilities in SPM that will attempt to
rotate/stretch/shear the tensors in the appropriate way. Maybe one day...
Best regards,
-John
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