title: [MRI of brain abscesses].
abstract: Four cases of brain abscess were examined on 1.5T MR and their findings were evaluated retrospectively. Preoperative cases had relatively characteristic findings, such as 1) peripheral edema producing hypointensity on T1-weighted images (T1WI) and hyperintensity on T2-weighted images (T2WI); 2) central necrosis with abscess fluid hypointense relative to white matter on T1WI and hyperintense on T2WI; 3) abscess rim iso- to hypointense on T2WI. Gd-DTPA enhanced T1WI carried further information; comparison of iso- to hypointense rim on T2WI (abscess rim) and enhanced area by Gd-DTPA on T1WI suggested that the former represented zone of macrophage infiltration.
authors.affiliation: Department of Radiology, Faculty of Medicine, Kyushu University.
authors.forename: H
authors.initials: H
authors.lastname: Irie
authors.forename: K
authors.initials: K
authors.lastname: Hasuo
authors.forename: K
authors.initials: K
authors.lastname: Yasumori
authors.forename: A
authors.initials: A
authors.lastname: Mizushima
authors.forename: T
authors.initials: T
authors.lastname: Kuroiwa
authors.forename: K
authors.initials: K
authors.lastname: Shirouzu
authors.forename: K
authors.initials: K
authors.lastname: Masuda
authors.forename: M
authors.initials: M
authors.lastname: Fukui
mesh_terms: D000328:Adult; D001922:Brain Abscess / Q000175:diagnosis*; D003287:Contrast Media; D005260:Female; D005682:Gadolinium; D019786:Gadolinium DTPA; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009942:Organometallic Compounds; D004369:Pentetic Acid
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D005682:Gadolinium; D019786:Gadolinium DTPA