Iwai Toshinori, Izumi Toshiharu, Inoue Tomio, Maegawa Jiro, Mitsudo Kenji, Tohnai Iwai
Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Yokohama, Kanagawa 236-0004, Japan.
Br J Oral Maxillofac Surg. 2012 Jun;50(4):373-5. doi: 10.1016/j.bjoms.2011.05.014. Epub 2011 Jun 17.
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%.
颈外动脉分支的变异很常见，但枕动脉起源于颈内动脉极为罕见。我们使用三维计算机断层扫描（CT）血管造影术调查了其发生率。在265例头颈部癌症患者中，我们在重建或超选择性动脉内化疗前进行了CT血管造影，以绘制颈外动脉及其分支的血管分布图。在530条颈动脉中，检测到枕动脉起源的有514条（97%）；其起源于颈内动脉的发生率为0.2%。
