摘要
目的:分析妊娠期高血压脑后循环可逆性脑病综合征(PRES)的MRI特征及诊断价值。方法:回顾性分析20例妊娠期高血压患者临床及MRI资料。所有患者治疗前行MRI平扫及DWI扫描。结果:本组伴有PRES 9例(45%),不伴有PRES 11例。MRI显示有PRES组共30个主要病灶,枕叶12个,胼胝体压部3个,顶叶半卵圆中心5个,颞叶5个,额叶3个。病灶主体位于皮质下白质、部分邻近皮质亦有受累。T_1WI等、稍低信号,T_2WI、T_2WI/flair稍高信号。DWI以等、稍高信号为主,ADC以等、稍低信号为著。T_2WI/flair发现病灶数最多,2例仅在DWI序列上显示清晰。结论:妊娠期高血压PRES MRI具有一定的特征性,DWI结合T_2WI/flair能发现更多病灶。
Objective: To investigate the MRI features and the diagnostic value of posterior reversible encephalopathy syndrome(PRES) caused by pregnancy-induced hypertension(PIH). Methods: Clinical and MRI data of 20 cases of PIH were retrospectively reviewed. All cases were examined by MRI scanning and diffusion weighted imaging(DWI) before drug therapy. Results: There were 9 cases with PRES(45%) and 11 cases without PRES. MRI revealed 30 lesions in the PRES group: 12 in the occipital lobe, 3 in the corpus callosum, 5 in the parietal lobe centrum semiovale, 5 in the temporal lobe, and 3 in the frontal lobe. Lesion location involved sub-cortical white matter and neighboring portions of the cortex. Lesions were mildly hypointense on T_1WI and mildly hyperintense on T_2WI and T_2WI/flair. Lesions were mildly hyperintense on DWI and hypointense on apparent diffusion coefficient(ADC). T_2WI/flair detected the highest number of lesions. Two cases were only able to be clearly imaged on the DWI sequence. Conclusion: MRI features of PRES caused by PIH display certain characteristics; DWI combined with T_2WI/flair can detect more lesions.
作者
王亚
王强
王忠
方运勇
梁福笑
WANG Ya;WANG Qiang;WANG Zhong;FANG Yun-yong;LIANG Fu-xiao(Department of Radiology;Department of Internal Medicine;Department of Gynaeologyand Obsterics,Dong Guan Maternal and Child Health Care Hospital,Guang Dong Dong guan 523000,China)
出处
《神经损伤与功能重建》
2018年第8期383-386,共4页
Neural Injury and Functional Reconstruction
基金
东莞市科技局立项课题资助项目(No.201610515000510)
关键词
妊娠期高血压
脑后部可逆性脑病综合征
磁共振成像
pregnancy-induced hypertension
posterior reversible encephalopathy syndrome
magneticresonance imaging