ナカジマ　レイコ   Nakajima Reiko   中島　怜子    所属   医学部 医学科（東京女子医科大学病院）    職種   助教
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Fenestrations of the intracranial vertebrobasilar system diagnosed by MR angiography.
掲載誌名	正式名：Neuroradiology 略　 称：Neuroradiology ISSNコード：14321920/00283940
掲載区分	国外
巻・号・頁	54(5),pp.445-50
著者・共著者	Uchino Akira, Saito Naoko, Okada Yoshitaka, Kozawa Eito, Nishi Naoko, Mizukoshi Waka, Inoue Kaiji, Nakajima Reiko, Takahashi Masahiro
発行年月	2012/05
概要	INTRODUCTION:Fenestrations of cerebral arteries are most common in the vertebrobasilar (VB) system, and magnetic resonance (MR) angiographic studies of these variations are sparse.METHODS:We retrospectively reviewed MR angiographic images of 3,327 patients; images were obtained using two 1.5-T imagers and picked up fenestrations of the intracranial vertebral artery (VA), VB junction, and basilar artery (BA) for evaluation.RESULTS:In 92 patients, we found 93 fenestrations (2.80%), which included 18 of the intracranial VA (0.54% prevalence), 6 of the VB junction (0.18%), and 69 of the BA (2.07%). Most VA fenestrations were large, and the posterior inferior cerebellar artery arose from the fenestrated segment in 10 patients (56%). Fenestrations of the VB junction were small and triangular. Sixty-five (94%) of the 69 BA fenestrations were located at the proximal segment and had small slit-like configurations. The anterior inferior cerebellar artery arose from the fenestrated segment in 27 patients (37%). We found 18 cerebral aneurysms in 16 (17%) of the 92 patients with fenestration but detected only one aneurysm at the fenestration.CONCLUSION:The overall prevalence of fenestrations of the intracranial VB system was 2.77%. We found associated cerebral aneurysms relatively frequently but rarely at the fenestration.
DOI	10.1007/s00234-011-0903-x
PMID	21732084