3.0TMRI常规序列及MRA对可逆性脑血管收缩综合征的诊断价值  

The value of conventional sequence and MRA in the diagnosis of reversible cerebral vasoconstriction syndrome at 3.0T MRI

作　　者：闫呈新[1] 朱建忠[1] 杨贵华[1] 张颜波[2] 

机构地区：[1]泰山医学院附属医院影像中心,山东泰安271000 [2]泰山医学院附属医院神经内科,山东泰安271000

出　　处：《实用放射学杂志》2016年第7期997-1000,共4页Journal of Practical Radiology

基　　金：山东省自然科学基金项目（ZR2012HQ014）;山东省高等学校科技计划项目（J10LF14）.

摘　　要：目的：探讨 MRI 各序列与 MRA 对可逆性脑血管收缩综合征（RCVS）的诊断价值。方法回顾性分析明确诊断的5例RCVS 患者的临床资料和 MRI 及 MRA 显示的异常血管分布、形态、脑实质病变信号特点。结果5例 MRA 结果均显示颅内外大动脉呈非动脉硬化性、非炎症性、多发节段性狭窄与扩张，典型者呈“串珠样”改变，有4例并发颅脑病变，其中1例合并后部可逆性脑病综合征（PRES），局部皮层蛛网膜下腔出血1例，分水岭区脑梗死3例。5例治疗后3个月复查 MRI 及 MRA 完全恢复正常。结论MRI 及 MRA 能清楚显示脑血管形态，观察脑实质的继发性病变，对临床治疗和预后的评估具有重要的指导意义。Objective To study the value of MRI sequence and MRA in the diagnosis of reversible cerebral vasoconstriction syn-drome （RCVS）.Methods MRI and MRA of 5 patients with RCVS were reviewed retrospectively.Abnormal distribution,morpholo-gy,signal intensity of the affected arteries and complication of RCVS on MRI and MRA were analyzed.Results All patients showed multifocal segmental vasoconstriction and dilatation of cerebral arteries on MRA,which sometimes was described as “string and beads”.There were 4 patients with cerebral parenchyma lesions,in which posterior reversible encephalopathy syndrome was showed in one case,cortical subarachnoid hemorrhage in one case,and watershed infarcts in 3 cases.Five patients recovered after 3 months. Conclusion MRI and MRA can clearly show cerebrovascular morphology and observe parenchymal secondary lesions,which have an important guiding significance for clinical treatment and prognosis assessment.

关 键 词：可逆性脑血管收缩综合征 磁共振成像 血管造影术 

分 类 号：R743[医药卫生—神经病学与精神病学] R445.2[医药卫生—临床医学]