CAJ | 학술논문

目的：探讨大脑后动脉成窗变异的C T血管成像（CTA）特征，提高对该血管变异的认识。方法2011年11月～2013年12月本院共有7326例患者行头颈联合320排 CTA 检查，其中8例确诊为大脑后动脉成窗变异。回顾性分析大脑后动脉成窗的部位、形态等 CTA 特征及其合并症。结果①8例患者中共有8个大脑后动脉成窗，P1段成窗7个，P1、P2段移行部联合同侧后交通动脉成窗1个；②其中1例合并基底动脉成窗，1例伴一侧大脑前动脉 A1段缺如；③2个成窗变异的“窗”径微小（＜2mm），呈裂隙状。6个“窗”径较大（＞2mm ，最大径约12mm），呈凸透镜样。8例患者均未发现颅内动脉瘤。结论大脑后动脉成窗变异是一种罕见的血管畸形，320排 CTA 能快速、直观、准确的判断大脑后动脉成窗变异及其合并症。
목적：탐토대뇌후동맥성창변이적C T혈관성상（CTA）특정，제고대해혈관변이적인식。방법2011년11월～2013년12월본원공유7326례환자행두경연합320배 CTA 검사，기중8례학진위대뇌후동맥성창변이。회고성분석대뇌후동맥성창적부위、형태등 CTA 특정급기합병증。결과①8례환자중공유8개대뇌후동맥성창，P1단성창7개，P1、P2단이행부연합동측후교통동맥성창1개；②기중1례합병기저동맥성창，1례반일측대뇌전동맥 A1단결여；③2개성창변이적“창”경미소（＜2mm），정렬극상。6개“창”경교대（＞2mm ，최대경약12mm），정철투경양。8례환자균미발현로내동맥류。결론대뇌후동맥성창변이시일충한견적혈관기형，320배 CTA 능쾌속、직관、준학적판단대뇌후동맥성창변이급기합병증。
Objective To analyze the CT angiography (CTA) features of the fenestrations variation of posterior cerebral artery ,and to improve diagnosis .Methods The imaging data of 7326 patients performed 320‐detector row CTA of the cranio cervical arteries in our hospital between November 2011 and December 2013 were evaluated retrospectively ,and 8 of them were diagnosed as the fenestration variation of posterior cerebral arteries .The location ,morphological characteristics of the fenestration of posterior cerebral artery and its coexisting abnormalities were analyzed .Results ① 8 fenestrations of posterior cerebral arteries in 8 patients were found .7 fenestrations were located at the P1 segments .One fenestration was located at the junctional zone between P1 and P2 segment ,and linked with the ipsilateral posterior communicating ar‐tery ; ② One case associated with fenestration of the basilar artery ,one case associated with absence of the A 1 segment of the anterior cerebral artery ;③ Two small fenestrations (less than 2 mm) presented slit‐shaped ,and 6 larger fenestrations showed convex lens like shape .Intracranial aneurysm was not found in all of the 8 cases .Conclusion 320‐detector row CTA of the cranio cervical arteries is a rapid and accurate method for demonstrating posterior cerebral artery fenestration variation and its coexisting abnormalities .