Dear FSL users & experts,
We were hoping to get some help on an issue we've had with our unwarping step (run as part of running a single-session melodic).
We noticed that for a couple of people in our study, the "fieldmap to highres" registration looks seriously displaced - see link: https://dl.dropboxusercontent.com/u/22466029/FieldmapAlignment/Missalignment.jpg
The majority of our scans have registered very well however - see link: https://dl.dropboxusercontent.com/u/22466029/FieldmapAlignment/GoodAlignment.png
We were wondering if anyone could advise on what might have caused this displacement in a few people only (scanned using the same scanner/ parameters, fieldmaps prepared using the same parameters & unwarped with the same parameters)?
We were also wondering what effect this has on the final data (the final func to highres looks ok) and what we can do to correct it?
Many thanks in advance for your help.
Kind regards,
Lucia
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