Hello,
I am attempting to preprocess some fMRI data (Siemens scanner) that was acquired with two distortion maps in opposite phase encoding directions, 1 TR each, along with the associated BOLD time-series data acquired in one direction. Despite its probable intent for being used for diffusion data, I tried using topup to perform a field map correction, but I've so far fallen short because of the different number of TRs between the BOLD data and the field map obtained in the opposite direction. Is there any way to handle this correction in FSL?
Thanks in advance
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