The eddy current correction can actually be detrimental in this case. I
have experienced this in ex vivo macaque data where the b0 had very
different contrast from the DWIs. I would view the timeseris in movie mode
in FSLView before and after the correction. If there is more apparent
motion after the correction you shouldn't do it.
Peace,
Matt.
-----Original Message-----
From: FSL - FMRIB's Software Library [mailto:[log in to unmask]] On Behalf
Of Torsten Ruest
Sent: Tuesday, July 27, 2010 3:04 AM
To: [log in to unmask]
Subject: [FSL] eddy current correction in DTI
Dear all,
I have some basic questions regarding an older study of ours were we applied
eddy current correction for our ex vivo mouse brain study. Then, we used a
Spin-Echo sequence and I understand that the correction may be more
applicable to EPI sequences. Does Spin-Echo DTI benefit from eddy current
correction, or could it be even detrimental?
In addition, we didn't expect our sample to move. Within the eddy current
routine there is also a rigid body coregistration applied, however this will
only be applied when the sample has moved, is this right?
Thanks for your support!
Cheers,
Torsten
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