title: [MR study of the brain stem in elderly subjects].
abstract: Findings in patients in whom brain stem lesions were suspected were studied by a high-field-strength (1.5 T) MR imager. MR scans were obtained in 97 patients over a 10-month period. The mean age was 71 years (range, 39-94 years). A high incidence of infarction and lesions showing a high signal on T2-weighted image, but an almost normal signal on the T1-weighted image were observed at the pons in elderly cases. Furthermore, cases in which these two findings were observed, had a high incidence of lesion at other regions than pons. Cases with a past history of hypertension had higher incidence of lesions at the pons than normotensive patients (alpha less than 0.01). These findings suggest that MRI examination in the elderly could detect a high incidence abnormal lesions at the brain stem as well as in basal ganglia.
authors.affiliation: Department of Nuclear Medicine and Radiological Science, Tokyo Metropolitan Geriatric Hospital.
authors.forename: M
authors.initials: M
authors.lastname: Tanno
authors.forename: M
authors.initials: M
authors.lastname: Nakayama
authors.forename: Y
authors.initials: Y
authors.lastname: Kyomatsu
authors.forename: M
authors.initials: M
authors.lastname: Kawakami
authors.forename: Y
authors.initials: Y
authors.lastname: Mashima
authors.forename: S
authors.initials: S
authors.lastname: Tanno
authors.forename: H
authors.initials: H
authors.lastname: Kasahara
authors.forename: K
authors.initials: K
authors.lastname: Chiba
authors.forename: K
authors.initials: K
authors.lastname: Endo
authors.forename: H
authors.initials: H
authors.lastname: Yamada
mesh_terms: D000368:Aged; D001479:Basal Ganglia / Q000473:pathology; D001933:Brain Stem / Q000473:pathology*; D002544:Cerebral Infarction / Q000175:diagnosis*; D005260:Female; D006801:Humans; D006973:Hypertension / Q000150:complications; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009849:Olivopontocerebellar Atrophies / Q000175:diagnosis*