3.0T磁共振MRA诊断颅内动脉成窗畸形

3.0T MRA Diagnosis of Intracranial Artery into the Window Deformity

目的:探讨3.0T磁共振MRA诊断颅内动脉成窗畸形的临床应用价值,了解颅内动脉成窗畸形MRA表现、好发部位以及临床应用价值。方法:回顾性分析2012年4月至2013年2月共22例颅内动脉成窗畸形患者的影像学特点、畸形好发部位、类型及其合并其他颅内血管性病变。22例均行颅脑磁共振血管成像(magnetic resonance angiography,MRA)扫描,再将原始图像经AW4.5工作站采用MIP及VR两种方法进行血管重组,并对血管图像进行后处理。结果:22例颅内动脉成窗畸形患者中,单发19例,多发3例,共计25处。其中19例单发病例中位于基底动脉6例,位于前交通动脉区3例,位于大脑前动脉10例;3例多发病例中,位于基底动脉及左大脑前动脉1例,位于左椎动脉颅内段及左大脑前动脉1例,位于基底动脉及前交通动脉1例。22例中合并其他颅内血管性病变者20例(20/22),达90.9%,双侧动脉对比一侧优势者16例,伴AVM1例,永存三叉动脉1例,大脑前动脉A1段缺失8例,血管狭窄2例。结论:3.0T磁共振MRA能清楚显示颅内动脉成窗畸形的位置、形态及合并颅内其他血管病变,是诊断颅内动脉成窗畸形首选、有效、无创的影像检查方法。

Objective： Explore 3.0 T MRA diagnosis of intracranial artery into the window deformity clinical value, understanding of intracranial artery into window deformity the MRA performance, the predilection sites, as well as the value of clinical application. Methods： A retrospective analysis of the April 2012 to February 2013, a total of 22 cases of intracranial arteries into window deformity in patients with the imaging features, deformity predilection sites, type its combined with other intracranial vascular lesions. 22 cases underwent brain MRA scan, then the original image AW4.5 workstation using two methods of MIP and VR vascular reorganization, and vascular image processing. Results： 22 cases of intracranial arteries window deformity patients, single 19 cases, multiple three cases, a total of 25. 19 patients with single cases in the basilar artery in six cases, three cases located in the anterior communicating artery, located in the anterior cerebral artery 10 cases. Three cases frequently occurring example, in the basilar artery and left anterior cerebral artery in 1 case, in the left vertebral artery intracranial segment of the left anterior cerebral artery in 1 case, in the basilar artery and the anterior communicating artery in 1 case. 20 patients with other vascular lesions in 22 cases, 90.9%, contrast side of the advantages of bilateral artery in 16 patients, with AVM 1 case, trigeminal artery in 1 case, At segment of anterior cerebral artery deletion in 8 cases,vascular stenosis in 2 patients. Concluson： 3.0 T MRA can clearly show the intracranial arteries window demformity position, morphology and other intraeranial vascular lesions, the diagnosis of intracranial into windows deformity preferred, effective, non-invasive imaging method.