【摘要】 目的 探讨永存颈内-基底动脉吻合血管的CT血管造影(CTA)及MR血管造影(MRA)影像学表现并分析其临床意义。方法 回顾性分析17例经头颈CTA及MRA诊断为永存颈内-基底动脉吻合血管患者的影像学资料。10例患者行头颈联合CTA检查，7例患者行颅脑和颈部MRA检查，其中3例同时行CTA及MRA检查。结果 永存三叉动脉(PTA)10例，按Saltzman分型：6例Ⅰ型，2例Ⅱ型，2例Ⅲ型。永存舌下动脉(PHA)3例，1例起始于右侧颈内动脉颈段，2例起始于左侧颈外动脉。寰前节间动脉(PIA)4例，2例位于右侧，2例位于左侧。1例PTA及1例PHA合并前交通动脉瘤。6例PTA、2例PHA及1例PIA伴发基底动脉或椎动脉发育不良。结论 CTA及MRA能清楚显示永存颈内-基底动脉吻合血管的行程及其伴发颅内畸形血管合并症，为外科及介入手术提供准确的影像资料和指导作用。更多还原

【Abstract】 Objective To explore the appearance of CT angiography(CTA)and magnetic resonance angiography(MRA) in persistent carotid-basilar artery anastomoses, and discuss its clinical significance.Methods 17 patients of persistent carotid-basilar artery anastomoses diagnosed by CT and MR angiography were retrospectively reviewed.10 patients were examined by craniocervical CTA, 7 patients were examined by cranial and cervical MRA, and 3 patients were examined by CTA and MRA. Results 10 patients had persistent trigeminal arteries(PTA).Based on Saltzman type: 6 cases were Saltzman typeⅠ, 2 cases were Saltzman typeⅡ,and 2 cases were Saltzman type Ⅲ.1 case of 3 persistent hypoglossal arteries(PHA) originated from the right carotid artery, and 2 cases originated from the left external carotid artery. 2 cases of 4 proatlantal intersegmental artery(PIA) were right ipsilateral, and 2 cases were left ipsilateral.1 case of PTA and 1 case of PHA associated with an aneurysm.6 cases of PTA,2 cases of PHA and 1 case of PIA complicated with ipsilateral vertebral arteries artopied or hypoplasia of the contralateral vertebral artery. Conclusion CTA and MRA can demonstrate clearly the course of persistent carotid-basilar artery anastomoses and its complicating intracranial coexisting abnormalities. Diagnosis of this anatomic variation may be helpful for providing reliable data to the guidance of surgery and interventional treatment.更多还原