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[Imaging characteristics of basilar artery hypoplasia]

Hua Gu1, Xiaojun Qian1, Shuangkun Wang1

  • 1Department of Radiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China.

Zhonghua Yi Xue Za Zhi
|January 1, 2015
PubMed

Insights

Basilar artery hypoplasia (BAH) is a rare vascular condition, more prevalent in females. It often co-occurs with fetal-type posterior circulation and vertebral artery hypoplasia, and is linked to acute cerebral infarction.

Area of Science:

  • Neurology
  • Radiology
  • Vascular Imaging

Background:

  • Basilar artery hypoplasia (BAH) is a rare vascular abnormality.
  • Understanding its imaging characteristics is crucial for diagnosis and management.

Purpose of the Study:

  • To determine the imaging characteristics of basilar artery hypoplasia (BAH).

Main Methods:

  • Retrospective analysis of 10,193 MRA and 31,716 MRI cases.
  • BAH defined as basilar artery diameter ≤ 2 mm.
  • Assessment of associated vertebral artery hypoplasia (VAH) and fetal-type posterior circle of Willis (FTP).

Main Results:

  • 210 cases of BAH identified (2.06% prevalence).
  • BAH more common in females (56.7%); associated with FTP (83.3% bilateral) and VAH (99.5% V4, 56.0% V1-V3).
  • 74 BAH patients (35.2%) had acute cerebral infarction (ACI), with males predominant in ACI cases.

Conclusions:

  • BAH is a rare vascular abnormality.
  • BAH is consistently associated with unilateral or bilateral FTP and V4 VAH.
  • BAH may be a risk factor for acute cerebral infarction, particularly in males.
Abstract

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