We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Azygous Anterior Cerebral Artery and Associated Aneurysms: Detection and Identification Using 3-Dimensional Time-of-Flight Magnetic Resonance Angiography.
- Authors
Wan‐Yin, Shi; Ming‐Hua, Li; Bin‐Xian, Gu; Yong‐Dong, Li; Hua‐Qiao, Tan
- Abstract
ABSTRACT AIM The azygous anterior cerebral artery (Az) is a rarely observed anomaly of the anterior cerebral artery, and its associated aneurysm is even rarer. Our aim was to evaluate 3-dimensional time-of-flight magnetic resonance angiography (3-D-TOF MRA) in the diagnosis of Az and associated aneurysms. MATERIALS AND METHODS Three thousand five hundred seventy-two consecutive patients underwent 3-D-TOF MRA at 3.0 T. Postprocessing techniques, including volume rendering (VR) and single artery highlighting, were performed by a 3-D specialist. All MRA data and clinical information were recorded and stored in a database for further analysis. RESULTS Fourteen patients (.39%) were identified as having an Az. Among these cases, 3 males (21.43%) had an aneurysm located at the distal bifurcation of the Az, with a mean size of 9.43 ± 3.33 mm. In MRA, the common trunk of the Az was slightly larger in diameter than the A1 segment (2.62 ± .35 mm vs. 2.54 ± .35 mm; P = .008). CONCLUSIONS With the VR technique, 3-D-TOF MRA is feasible and valuable in detecting an Az and associated aneurysm. Our MRA-based study has proved that the Az is a rare anomaly but has a relatively high incidence of associated aneurysms.
- Subjects
AZYGOS vein; CEREBRAL arteries; INTRACRANIAL aneurysms; MAGNETIC resonance angiography; DIGITAL subtraction angiography
- Publication
Journal of Neuroimaging, 2014, Vol 24, Issue 1, p18
- ISSN
1051-2284
- Publication type
Article
- DOI
10.1111/j.1552-6569.2012.00769.x