硬脑膜动静脉瘘的影像特征分析

目的 通过分析硬脑膜动静脉瘘（dural arteriovenous fistula，DAVF）患者的影像学检查结果，探索DAVF在不同影像学检查中的特征性表现，为临床诊断治疗提供依据。方法 对自2005年以来在我院治疗的32例DAVF患者的影像学资料进行回顾性分析。结果 32例DAVF患者，颅脑CT和磁共振成像（magnetic resonance imaging，MRI）检查能较好地显示因DAVF所致的颅内继发性病变，如扩张的引流静脉，继发性出血及静脉窦狭窄、闭塞等改变。数字减影血管造影（digital subtraction angiography，DSA）检查则能准确地显示瘘口部位、供血动脉、静脉引流情况及颅内血流分布情况，但无法显示继发的脑实质病变。 结论 DSA检查是诊断DAVF的金标准。CT、MRI检查亦能为诊断DAFV提供依据。

Imaging Features of Dural Arteriovenous Fistula

Objective To discuss the imaging features of dural arteriovenous fistula(DAVF).Methods The imaging features of DAVF patients after 2005 were analyzed retrospectively.Results Thirty-two cases suffering from DAVF were treated from 2005. CT and MRI examintionscould well show the intracranial lesions secondary to DAVF including the enlarged draining veins,hemorrhage, and narrow and occluded venous sinus. DSA could exactly show the orifices, feedingateries and draining veins of DAVF, and distribution of the intraranial blood flow, but not thecerebral parenchyma lesion secondry to of DAVF.Conclusion DSA is an ideal and reliable method for the diagnosis of DAVF. CT and MRI canprovide the useful information for the diagnosis of DAVF.