Incidence of the occipital artery arising from the internal carotid artery identified by three-dimensional computed tomographic angiography

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• 作者：Toshinori Iwai^a ; ^{iwai104oams@yahoo.co.jp} ; Toshiharu Izumi^b ; Tomio Inoue^b ; Jiro Maegawa^c ; Kenji Mitsudo^a ; Iwai Tohnai^a
• 关键词：Occipittal artery ; Internal carotid artery ; External carotid artery ; Anatomic variation ; Three-dimensional computed tomographic angiography
• 刊名：British Journal of Oral and Maxillofacial Surgery
• 出版年：2012
• 期刊代码：41_02664356
• 类别：med
• 出版时间：June, 2012
• 卷：50
• 期：4
• 页码：373-375
• 文件大小：247 K

摘要

Variants of the branches of the external carotid artery are common, but it is extremely rare that the occipital artery arises from the internal carotid artery. We investigated the incidence using three-dimensional computed tomographic (CT) angiography. In 265 patients with cancer of the head and neck, we did CT angiography for vascular mapping of the external carotid artery and its branches before reconstruction or superselective intra-arterial chemotherapy. The origin of the occipital artery was detected in 514 of 530 carotid arteries (97%); the incidence of it arising from the internal carotid artery was 0.2%.