The field map script works, but the results don look right. Whats wrong?
The most common source of error is when the user doesn’t copy the field map graphical prescription correctly between scans so check to make sure you’ve done that correctly. In particular, make sure phase-encoding direction and matrix size are the same for all your fieldmap scans and your EPI scans. I can’t copy the prescriptions! The user interface has a somewhat quirky personality, which takes some time to become familiar with. In general, if you’ve already copied a graphical prescription to a scan, realize you’ve made a mistake and try to copy another prescription, you may find yourself out of luck. If this happens to you, usually the best thing to do is to copy in a fresh protocol and copy the correct prescription to it. You can then cut the protocol that didn’t work out.
