Dear all,
finally, I tested topup and eddy on a HCP-adapted diffusion MRI dataset (96 dir, left-right and right-left). Using the "trial and error" approach I managed it all the way through. Eddy took quite a while (and I'm not talking about minutes ...).
My question is: The input for eddy (i.e. the merged raw data DTI_RL.nii.gz + DTI_LR.nii.gz=192 dir) is 92 MB, but the output of eddy 490 MB. The --iout of topup is 30 MB, consisting of 6 b0-values for each encoding direction).
Since this is the first time I tried to correct for eddy current and susceptibility artifacts, I just wanted to make sure, that this is totally normal and that I didn't miss an error (at least there was no message).
Thank you very much,
Martin
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