Value of CT angiography in the evaluation of a peripheral anterior inferior cerebellar artery aneurysm: case report.
We report a case of a peripheral anterior inferior cerebellar artery (AICA) aneurysm in a 66-year-old woman. Computed tomography angiography (CTA) demonstrated a saccular aneurysm in the left AICA. A subsequent vertebral digital subtraction angiography using our standard injection technique failed to demonstrate the aneurysm. However, the aneurysm was visualized on a follow-up injection performed with an increased contrast dose and injection rate. CTA proved to be critical in the detection of this aneurysm which could have been easily overlooked on a conventional angiogram.
Department of Radiology, University of Rochester Medical Center, New York, USA.
S
S
Iwanaga
D A
DA
Shrier
S H
SH
Okawara
Y
Y
Numaguchi
D000368:Aged; D015901:Angiography, Digital Subtraction; D002531:Cerebellum / Q000098:blood supply*; D002533:Cerebral Angiography / Q000379:methods*; D002536:Cerebral Arteries / Q000000981:diagnostic imaging*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging*; D015203:Reproducibility of Results; D014057:Tomography, X-Ray Computed