Pontine and Midbrain Infarction: Diffusion-weighted axial MRIs at the level of the pons (left) and upper pons/midbrain (right) on Day 1. Note the bright signal within the base of the pons and lower ...

The mean area of the midbrain tegmentum, measured in the mid-sagittal plane, in both probable and possible PSP cases, was significantly lower than in PD, MSA-P, and normal patients.