Fig. 2.
DTI in the coronal plane of the mid to low calf area using 15 gradient directions. The gradient directions are (a) [1.0000 1.0000 0.0000], (b) [0.9999 −0.1561 0.9879], (c) [0.3580 −0.9800 −0.9547], and (d) [0.9999 −0.3989 −0.9171]. The anisotropic water diffusion signal in the sural nerve fiber is observed.
