Dear Cynthia,
It looks like you are running an old version of FSL.
I recommend upgrading to the latest version (5.0.1) and this problem should go away.
All the best,
Mark
On 27 Nov 2012, at 16:47, Cynthia Krafft <[log in to unmask]> wrote:
> Thank you for your help. That did solve the streaking effect but now there is still a black mark across the front of the brain (screenshot attached).
>
> Could this be because this individual moved in between the collection of the first and second fieldmaps? I tried registering the first fieldmap to the second fieldmap as the first processing step immediately after converting DICOMs to NIfTI format (using a 6-parameter model in the FLIRT GUI) and then rerunning all of the normal fieldmap processing that I have used. It looks like registration worked but this might not have been the right way to deal with the problem because the fieldmap unwarping results are very wrong. I can provide more information or data if you like. Thanks!
> <B0 unwarping 112712.PNG>
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