(A,B) T2-weighted images showing diffuse asymmetric (L > R) bilateral frontoparietal atrophy (arrows) in a 54-year-old woman with progressive nonfluent aphasia and mild parkinsonism (MMSE 29) due to pathology-proven corticobasal degeneration. (C,E) Sagittal and (D) coronal T1-weighted images from a high-resolution volumetric sequence showing (C, compared with the pons) reduced midbrain area and (D) thinned superior cerebellar peduncles (arrows), compared with (E) the middle cerebral peduncles (arrows) in a 61-year-old man with parkinsonism and frontal-executive dysfunction (MMSE 27) and autopsy-proven progressive supranuclear palsy. (F) Axial FLAIR and (G) coronal T2* images showing posterolateral putamen hypointensity with hyperintense rim (arrow and dotted arrow) in a 64-year-old man with multiple system atrophy (MMSE 26). MMSE, Mini Mental Status Examination; FLAIR, fluid attenuation inversion recovery.