Hi Tim – The best method to use will depend on the data you have. If you have very high b-values, you should use eddy. You can turn off the eddy current part of the preprocessing with “set eddy=0” in the config file, and run trac-all on your corrected images.
Best, a.y From: <freesurfer-boun...@nmr.mgh.harvard.edu<mailto:freesurfer-boun...@nmr.mgh.harvard.edu>> on behalf of Timothy Hendrickson <hendr...@umn.edu<mailto:hendr...@umn.edu>> Reply-To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu<mailto:freesurfer@nmr.mgh.harvard.edu>> Date: Monday, August 13, 2018 at 4:00 PM To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu<mailto:freesurfer@nmr.mgh.harvard.edu>> Subject: [Freesurfer] TRACUAL eddy_correct Usage External Email - Use Caution Hello, I notice that within TRACULA 6.0 that eddy_correct is used for the eddy current correction. This is an older tool as compared to eddy, is there a reason that eddy_correct is still used? Have you done cross comparisons between eddy_correct and eddy? If so did you find much difference in eddy current corrections? Thanks! -Tim
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