title: The use of three-dimensional computed tomographic angiography in the accurate diagnosis of internal carotid artery aneurysms: degree for expression of posterior communicating and anterior choroidal arteries.
abstract: We have improved the scan protocol of three-dimensional computed tomographic angiography (3D-CTA) to maximize the accuracy of examining unruptured cerebral aneurysms. Sixty-seven cases of suspected internal carotid-posterior communicating (Pcom) and internal carotid-anterior choroidal (Ant Cho) artery aneurysms were evaluated as to the opacification of arteries. In the 46 cases of suspected fetal-type Pcom and Ant Cho aneurysms, the arteries were opacified from its origin to the periphery in all cases. A final diagnosis of the presence of an aneurysm was made possible by complete opacification. A definite diagnosis was impossible to make in only ten cases having adult-type Pcom. In conclusion, 3D-CTA, using our own scan protocol, was proven to be quite useful for making a more accurate diagnosis.
authors.affiliation: Division of Neurosurgery, Obihiro Neurosurgical Hospital, Obihiro, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Kurokawa
authors.forename: Y
authors.initials: Y
authors.lastname: Yonemasu
authors.forename: H
authors.initials: H
authors.lastname: Kano
authors.forename: T
authors.initials: T
authors.lastname: Sasaki
authors.forename: K
authors.initials: K
authors.lastname: Inaba
authors.forename: S
authors.initials: S
authors.lastname: Shigeno
authors.forename: T
authors.initials: T
authors.lastname: Shimizu
authors.forename: A
authors.initials: A
authors.lastname: Nitta
authors.forename: H
authors.initials: H
authors.lastname: Kaho
mesh_terms: D000328:Adult; D000368:Aged; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging* / Q000473:pathology*; D002831:Choroid Plexus / Q000098:blood supply*; D003936:Diagnosis, Computer-Assisted / Q000379:methods*; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging*; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008875:Middle Aged; D014057:Tomography, X-Ray Computed / Q000379:methods*