FIG 1. MR imaging findings of the posterior fossa on admission. A, Axial view at the level of medulla and cerebellum. B, Axial view at the level of pons and cerebellum. C, Axial view at the level of midbrain. T2-weighted image, T1-weighted image, and gadolinium-enhanced images of each section indicated as 1, 2, and 3, respectively.