摘要
目的探讨低场强MRI对早期脑出血的诊断价值。方法回顾性分析12例脑出血的SE序列T1WI、T2WI、DWI,梯度回波T2*WI扫描,以及CT扫描的影像学表现。结果 12例均为单发出血,其中右侧基底核区出血5例,左侧基底核区出血4例,左侧颞叶1例,右侧半卵圆中心1例,小脑出血1例。从出血时间上分超急性期(<6h)6例、急性期出血(1～3d内)5例和亚急性期(4d～2W)1例。梯度回波T2*WI序列上超急性期、急性期和亚急性期出血周边都可显示环形线样低信号影(铁环征)。结论低场强MRI的梯度回波T2*WI序列在早期脑出血的影像诊断及鉴别诊断上有特征性表现。
Objective To discuss the diagnostic value of low-field MRI for cerebral hemorrhage.Methods Twelve patients of cerebral hemorrhage confirmed with CT were enrolled in this study.All patients underwent spin echo T1,spin echo T2,DWI and gradient echo T2＊WI scanning.Results All the 12 cases had solitary lesion located in right basal ganglia（n=5）,left basal ganglia（n=4）,left temporal lobe（n=1）,right semi-oval center（n=1）,cerebellar（n=1）.According to the onset time,all the 12 lesions belong to superacute phase（n=6）,acute phase（n=5） and subacute phase（n=1）.From Gradient echo T2＊WI sequence images of all 3 phases,the ring wire-like low signal（＂hoop-levy sign＂） can be found around.Conclusion The low-field MRI gradient echo T2＊WI sequence performed characteristicly on the diagnosis and differential diagnosis of early cerebral hemorrhage.
出处
《实用心脑肺血管病杂志》
2013年第1期87-88,共2页
Practical Journal of Cardiac Cerebral Pneumal and Vascular Disease
关键词
脑出血
磁共振成像
诊断
Cerebral hemorrhage
Magnetic resonance imaging
Diagnosis
