Figure 3c. Trace of foot CST in a healthy 40-year-old male volunteer. (a) CST (blue) is superimposed on sagittal spin-echo echo-planar MR image (10 000/100). The two red lines indicate transverse sections of different obliquities through CST. (b, c) Corresponding transverse spin-echo echo-planar MR sections (10 000/100). Clearly, anatomic location of CST does not change; rather, only its apparent anterior-posterior location changes. This difference in section angulation may account for the different interpretations of relative position of the CST.