[Mristudio-users] Correction of Oblique image

[susumu mori]

The rotation operation DtiStudio provides is for visualization only and
should not be used for any quantification purpose.

If you need to reorient you data (including image registration,
normalization, standardization, alignment, etc), you should use DiffeoMap,
UNLESS you are talking about image registration of intra-DTI dataset

As someone asked before, there are several ways to reorient your DTI data;

1) Reorient original DWI before tensor calculation. We do not support this
approach.
2) First calculate a tensor and reorient the tensor map. This is possible by
DiffeoMap. Please load the tensor map by the "load *.d" button so that
DiffeoMap knows that it has to perform tensor reorientation.
3) First calculate a tensor and then FA map. Then reorient the FA map by
DiffeoMap.

Susumu

On Wed, Jul 28, 2010 at 10:57 PM, [Seongjin] <choisj70 at gmail.com> wrote:

> Some images are not well aligned vertically (hence horizontally) in the
> axial image.
> DTI studio provides to correct this using oblique operation.
> I guess I should the oblique operation to correct this after the tensor
> calculation.
> Then resulting tensor also need to be corrected by the same angle
> correction done in the oblique correction.
>
> Is there any general advice to do this right (including axial /coronal /
> sagittal rotation)?
>
> -SC
>
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