Hi everyone
Has any further progress been reported on this? We are very keen to introduce some sort of distortion correction into the analysis pipeline for the studies we are about to run and of course staying within AFNI would be ideal. Otherwise, could someone give a reference for the blip-left and blip-right method of computing the distortion field for gradient echo EPI? I know the Embleton et al. 2010 paper in Human Brian Mapping but this was specifically for spin-echo EPI.
Since we are scanning at 1.5 T (in Sussex) perhaps this is not a really pressing need for us but I would like to learn more about the various options available just out of pure interest.
thanks
James