I’m using a dataset which has released the preprocessed DWI data. The preprocess they’ve done includes denoising and eddy-current correction, and since they’ve acquired using two b-values they have released two preprocessed diffusion scans per subject, one for each b-value. I’m trying to use them for multi-tissue Fixel-based Analysis.
I merged both scans using mrcat. I first thought they’ve done the motion correction and both scans are registered to each other, but skimming through the images using mrview showed the opposite.
Now I want to do the subject motion correction but not eddy current correction (due to computational loads on the system). Are there any options to only do the motion correction? If not, can I simply run dwipreproc to do so? I’m not sure whether running this command on an eddy-current corrected scan may damage the data or not.