Fig. 1
Representative images illustrating the acquisition of multiple MR metrics of the median nerve at the pisiform bone level in a CTS patient (A,B) and a healthy control (C,D). The median nerve’s long diameter (blue), short diameter (orange), and cross-sectional area (red) were measured on an axial PD weighted image (A,C). The median nerve’s T2 values were obtained from the T2 mapping and axial PD fusion images (B,D). The median nerve’s DTI metrics, including fractional anisotropy, apparent diffusion coefficient, axial diffusivity, and radial diffusivity, metrics were acquired on the color images (E). PD proton density.
