A convenient option for this is FSL’s “eddy_correct” command.Correct for Eddy Current distortions, movement using affine registration.If you have multiple b0, were they acquired with the same encoding gradient? If not, slight variations in processing will be needed.How many b0s do you have and where are they with respect to the full series? (Often the b0 image(s) is/are the first volumes in the DWI set).
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