Fig 2. Axial diffusion tensor color maps of the brain stem at the level of the middle cerebellar peduncles.

A, Image of patient with a pontine tumor showing destruction of the normal anisotropy of the corticospinal tracts and posterior displacement of the medial lemnisci.

B, Control image showing normal corticospinal tracts, transverse pontine fibers, and medial lemnisci.

C, Image of patient with a pontine tumor showing a diffusely infiltrating pattern.