256层CTA诊断头颈部动脉开窗畸形

Diagnostic value of 256 MSCT angiography in intra and extracranial arterial fenestration

目的探讨头颈部动脉开窗畸形的影像学特点及其临床意义。方法回顾性分析2011年1月～2011年12月360例头颈部CTA影像资料和临床表现,主要观察动脉开窗畸形的存在及表现。结果 360例中发现动脉开窗畸形18例,其中9例位于椎动脉,5例位于基底动脉,2例位于大脑中动脉;2例位于前交通动脉。根据血管窗大小及形态分型:10例为裂隙型,9例为凸透镜型。所有病例均表现为变异动脉的局限性重复,18例中1例伴有颅内动脉瘤。结论 MSCTA可以准确显示动脉开窗畸形的位置、形态和毗邻关系,有助于指导头颈部血管病变的诊断与治疗,应作为首选检查方法。

Objective To explore the imaging characteristic and clinical value of arterial fenestration of the head and neck. Methods We introspectively studied the imaging and clinical manifestations of 360 cases examined by CTA in the head and neck from 2011.1 to 2011.12. We mainly observed the manifestations of arterial fenestration. Results In 360 cases, 18 cases were detected with fenestrations, 9 cases in vertebral artery, 5 in basilar artery, 2 in middle cerebral arter- y, 2 in anterior communicating artery region. The arterial fenestration was typed on the base of its size and morphology. 10 were categorized as slit-pattern, 9 as convex-lens-pattern. All the cases exhibited localized vascular duplication, 1 was complicated with aneurysms, and 1 with original anomalies of left common carotid artery. Conclusion MSCTA can accu- rately demonstrate the location, type and adjacent structure of fenestration, It has an important use to guide diagnosis and treatment of the disease in the head and neck. So it is an optimum noninvasive imaging tool for the diagnosis of intra and extracranial arteries.