title: The empty delta sign.
authors.affiliation: Department of Radiology, Muroran City General Hospital, Yamate-chou 3-8-1, Muroran 051-8512, Japan. satyoshi@chive.ocn.ne.jp
authors.forename: Satoru
authors.initials: S
authors.lastname: Yoshida
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Shidoh
mesh_terms: D002533:Cerebral Angiography; D002543:Cerebral Hemorrhage / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012851:Sinus Thrombosis, Intracranial / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging; D013702:Temporal Lobe / Q000098:blood supply / Q000000981:diagnostic imaging*