Figure 8.

(A) Phase difference maps using spin-echo diffusion sequence between b=0 and b=600 s/mm2 with amplitude of the pre-pulse gradient varying from −60mT/m to 60mT/m for diffusion direction applied at Gx, Gy and Gz, respectively.
(B) Average phase difference across 3D images of (A).
(C) Phase difference for the six diffusion directions used in DTI-MRF. Since each direction used two different gradient axes (e.g. Gx and Gz for the 1st direction), a two-dimensional compensation was implemented.