脑干梗死与低场强MRI的表现

目的探讨脑干梗死的临床表现及低场MRI的诊断价值。方法回顾性分析经临床确诊的44例脑干梗死患者的临床及低场MRI资料。结果 44例脑干梗死包括:脑桥梗死38例,中脑梗死3例,延髓梗死3例。临床表现为构音障碍、饮水呛咳、偏身运动障碍等。MRI显示病灶直径以6～16 mm为主,形态为不规则斑片状,信号特点为T1WI呈等或低信号,T2WI呈高信号,FLAIR序列呈高或低信号。结论 MRI是脑干梗死最有效的影像学诊断方法。

Analysis on clinical manifestations and low field MRI features of brainstem infarction

Objective To investigate the clinical manifestations and low field magnetic resonance imaging(MRI) features of brainstem infarction.Methods The clinical characteristics combined with the corresponding low field MRI features of 44 cases with brainstem infarction were analyzed retrospectively.Results Among 44 cases,38 cases showed pons infarction,3 cases suffered midbrain infarction,and 3 cases showed oblongata infarction.The common clinical symptoms and signs were partial body movement disorder,dysarthria and wet cough.All cases had positive effectives in MRI,and MRI manifested their sizes in diameter was mainly of 6～16mm,and the shape was irregular patch.All lesions showed isointensity or short signals on T1WI,high signals on T2WI,high or low signals on FLAIR.Conclusion MRI is the most effective method in the diagnosis of brainstem infarction.