[Mristudio-users] A conceptual question on using B0 from different scans.

[susumu mori]

Because you expect anatomical change before and after surgery, I think it's
difficult to share a b0 image for both scans.

On Wed, Jan 23, 2013 at 11:13 AM, Dorian P. <alb.net at gmail.com> wrote:

> Dear all,
>
> I have a particular situation and would like your help. The DWI
> acquisitions from a very important subject have been recorded with errors
> from the scanner. I have most of the gradient directions, but not the B0.
> This would prevent me from calculating DTI, of course.
>
> But I have a later DWI acquisition from the same subject, post surgery. So
> I was wondering if I can recover the pre-surgical DTI by using the B0 from
> the post-surgery scan.
>
> So, do you think I can play around the problem and use the B0 from the
> second acquisition to calculate DTI on the first? Or, to put the question
> differently, are the changes in white matter reflected both on DWI and on
> the non-DWI images, or does the B0 stay the same insensitive measure to
> white matter changes, which are captured with DWI images.
>
> Finally, would it make sense to make this swap and calculate FA with the
> same B0 both pre and post or this is simply a delirious solution?
>
>
> Thank you.
>
> Dorian
>
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