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

[Dorian P.]

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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