可逆性后部脑病综合征的MRI表现特征

MRI Features of Reversible Posterior Encephalopathy Syndrome

目的:探讨可逆性后部脑病综合征(posterior reversible encephalopathy syndrome,PRES)的MRI特征性表现,以提高对本病的影像学认识。方法:回顾性分析本院从2016年8月至2019年5月经临床确诊的PRES患者12例,颅脑的MRI影像学和临床资料。12例患者全部行MR检查,5例行MRI增强扫描。结果:12例MRI表现为双侧枕顶叶对称性或不对称性片状异常高信号,边界不清,5例病变累及双侧基底节区,2例病变累及双侧丘脑,6例累及双侧额叶,3例累及双侧颞叶。5例增强扫描病变无强化。经治疗后复查病灶吸收消失9例,病灶缩小3例。结论:PRES具有特征性MRI影像学表现,能够为临床治疗提供依据。

Objective:To explore the characteristic MRI manifestations of reversible posterior encephalopathy syndrome(PRES)in order to improve the imaging understanding of the disease.Methods:The MRI and clinical data of 12 pres patients with brain from August 2016 to may 2019 were analyzed retrospectively.All 12 patients underwent MR examination,5 cases enhanced MRI.Results:The MRI findings of 12 cases were symmetrical or asymmetric abnormal high signal in bilateral occipitoposterior lobes,unclear boundary,bilateral basal ganglia in 5 cases,bilateral thalamus in 2 cases,bilateral frontal lobes in 6 cases,bilateral temporal lobes in 3 cases.There was no enhancement in 5 cases.After treatment,the absorption of the focus disappeared in 9 cases and the focus shrank in 3 cases.Conclusion:PRES has characteristic MRI findings,which can provide basis for clinical treatment.