Hi - it does just sound like you have the unwarpdir the wrong way if
fugue is making things worse. Don't forget that this could be
comletely different for your diffusion data than in the FMRI.
Cheers.
On 13 Feb 2008, at 21:48, Carlos Faraco wrote:
> Has anyone ever encountered a situation in which fugue has stretched
> out a
> DTI image more after after applying the fieldmap? This is weird as
> this is
> not happening to my fMRI data when running Feat. I know that in my
> case I
> have to specify --unwarpdir=-y. Even so, distortion occurs in the same
> direction as when the default (--unwarpdir=y) is used, just not as
> much. I
> should also mention this is not the case with some other data I had
> acquired.
>
> Thanks in advance,
>
> Carlos
>
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Stephen M. Smith, Professor of Biomedical Engineering
Associate Director, Oxford University FMRIB Centre
FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
+44 (0) 1865 222726 (fax 222717)
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