Fig. 2

Axial color-coded fractional anisotropy map demonstrating the well-defined corticospinal tract (CST, blue) at the level of the cerebral cortex (A) and pons (B). The right corticospinal tract in the sagittal section (C). The left corticospinal tract in the sagittal section (D). The cross-sectional area of the corticospinal tract estimated with DTI. Control 1 (E), Control 2 (F), and our patient (G) featured symmetry indices of 0.86, 1.02, and 0.33, respectively