Hi - you're mostly right, you won't get eddy correction in this case
but you can still correct for head motion. However, you may as well
constrain the degrees-of-freedom to be rigid body in this case, so
take a local copy of eddy_correct and add the following flag to the
flirt call (just before the ">>"):
-dof 6
Cheers.
On 16 Feb 2009, at 18:37, Mazerolle, Erin wrote:
> Hello,
> I was hoping someone could tell me if it is valid to run FSL's eddy
> current correction with diffusion data collected using a spiral
> trajectory. I don't imagine it would be able to correct for eddy
> currents due to the difference in trajectory, but can it still do
> the motion correction across images with different bvalues?
> Thanks!
> Erin
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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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