[Mristudio-users] gradient table rotation for multiple repetition data set

[susumu mori]

Usually, we first calculate tensor and then register the tensor maps with
proper reorientation, rather than register the raw DWIs with rotated
gradient tables.

It is possible to do your approach, but tensor registration would be easier,
I think.

On Wed, Jul 28, 2010 at 2:40 PM, Rajagopalan, Venkateswaran <
rajagov2 at ccf.org> wrote:

>
> Dear All,
>
> We have diffusion data set acquired with 5 trails/repetitions(in single
> time point/cross sectional) for each and every subject. After eddy current
> correction i would like to do gradient table rotation. I am registering all
> the 5 trails to the b0 image. Since after eddy/motion correction i have
> affine matrix for all the 5 trails i.e i have 13*5 affine matrices so I am
> wondering which set of affine matrices i.e first 13 affine matrices or
> affine matrices from second trail/repetition should i use to rotate my
> gradient table.
>
> Thanks
>
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