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Basilar artery fenestration detected with CT angiography
Ling-Yun Gao1, Xiang Guo, Jie-Jie Zhou
1Department of Radiology, First Affiliated Hospital, Wenzhou Medical College, Wenzhou, 325000, China.
European Radiology
|May 24, 2013
Summary
Basilar artery fenestrations occur in 2.33% of patients and are linked to posterior circulation aneurysms. The anterior inferior cerebral artery often arises from convex-lens-like fenestrations.
Area of Science:
- Neuroimaging
- Vascular Neurology
- Cerebrovascular Anatomy
Background:
- Basilar artery (BA) fenestrations are rare vascular anomalies.
- Understanding their prevalence and associated pathologies is crucial for clinical management.
Purpose of the Study:
- To analyze the characteristics of BA fenestrations.
- To investigate their coexistence with aneurysms and other cerebrovascular anomalies.
- To classify BA fenestrations based on their morphology.
Main Methods:
- Retrospective review of 5,657 cerebral computed tomographic angiography (CTA) datasets.
- Utilized volume rendering and maximal intensity projection for image reconstruction.
- Classified fenestrations into four types based on anatomical features.
Main Results:
- BA fenestrations were identified in 2.33% of cases, predominantly in the proximal segment.
- Associated aneurysms were found in 34 cases, with a significant association with posterior circulation aneurysms (P=0.025).
- Other anomalies included arteriovenous malformations and moyamoya disease.
Conclusions:
- BA fenestrations are present in 2.33% of individuals, often with slit-like configurations.
- A significant association exists between BA fenestrations and posterior circulation aneurysms.
- The anterior inferior cerebral artery (AICA) shows a tendency to originate from convex-lens-like fenestrations.
