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

[Dorian P.]

Dear Dr. Mori,

I appreciate your comment on this. Does it mean that anatomical differences
out of the lesion area can be reflected on the B0? Shouldn't that baseline
be mostly insensitive to white matter (or diffusion) changes?

Thank you.

Dorian

2013/1/23 susumu mori <susumu at mri.jhu.edu>

> 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
>>
>> _______________________________________________
>> mristudio-users mailing list
>> mristudio-users at mristudio.org
>> http://lists.mristudio.org/mailman/listinfo/
>> Unsubscribe, send a blank email to:
>> mristudio-users-unsubscribe at mristudio.org
>>
>>
>
> _______________________________________________
> mristudio-users mailing list
> mristudio-users at mristudio.org
> http://lists.mristudio.org/mailman/listinfo/
> Unsubscribe, send a blank email to:
> mristudio-users-unsubscribe at mristudio.org
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.mristudio.org/pipermail/mristudio-users/attachments/20130123/39cdc5d3/attachment.html