Hi,
I am having issues running DTIPrep on multi-band  DTI dataset and it seems DTIPrep cannot handle multiband data. Is it true?
I have a multi-band DTI  dataset(MB factor 3) which visually appears to be fine and when I use FSL to compute the motion params, it gives me mean motion of 1.3 and max of 2.9. Ideally, this data set should pass the QC. But when I use DTIPrep to process, the output QCed image has only 8 dirs left out of 137 and the dataset does not pass the QC. Please find attached the screenshot of one of the directions of the QCed image. The image looks distorted too.

Any suggestions? I never had any problem when I ran DTIPrep on the dataset with MB factor 1.