title: Brain stem hypertensive encephalopathy evaluated by line scan diffusion-weighted imaging.
abstract: Hypertensive encephalopathy rarely presents with predominant involvement of the brain stem and relative sparing of the supratentorial regions. We describe the MR imaging features in a patient with reversible brain stem hypertensive encephalopathy. Extensive hyperintensity was predominantly seen in brain stem regions on fluid-attenuated inversion-recovery and T2-weighted images. These lesions showed an increased apparent diffusion coefficient with the use of line scan diffusion-weighted imaging. The clinical findings and MR imaging abnormalities resolved with control of hypertension.
authors.affiliation: Department of Radiology, Mie University School of Medicine, Tsu, Mie, Japan.
authors.forename: Motonori
authors.initials: M
authors.lastname: Nagata
authors.forename: Masayuki
authors.initials: M
authors.lastname: Maeda
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Tsukahara
authors.forename: Stephan E
authors.initials: SE
authors.lastname: Maier
authors.forename: Ken
authors.initials: K
authors.lastname: Takeda
mesh_terms: D000368:Aged; D001933:Brain Stem; D038524:Diffusion Magnetic Resonance Imaging; D006801:Humans; D020343:Hypertensive Encephalopathy / Q000175:diagnosis*; D008297:Male