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胼胝体梗死的MRI诊断

Journal of Medical Imaging(2009)

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Abstract
目的:探讨MRI对胼胝体梗死的诊断价值,提高对胼胝体梗死的MRI表现及临床意义的认识。方法:回顾性分析25例胼胝体梗死患者的MRI和临床表现资料,男14例,女11例,年龄17~82岁,平均53.8岁。全部病例均以肢体无力、言语不清、意识障碍或反应迟钝就诊。所有患者均行常规颅脑MRI平扫,3例同时行MRI增强扫描,2例治疗后复查了MRI。结果:所有患者均存在胼胝体梗死,T1WI表现为低信号,T2WI及FLAIR为高信号,局限或弥漫性分布,波及胼胝体全层。病灶位于压部11例、膝部3例、体部1例;同时累及膝部及体部4例、体部及压部1例;单侧胼胝体全程受累5例。梗死灶沿胼胝体偏侧性分布(22例)明显多于对称性分布(3例),差异有统计学意义(χ2=7.260,P<0.05)。3例梗死灶增强扫描未见明显强化;2例治疗后复查MRI提示病灶明显缩小。结论:胼胝体梗死是临床急症之一,MRI可直观反映梗死灶部位及范围,是临床诊断胼胝体梗死最客观的参考指标。
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Key words
Magnetic resonance imaging,Corpus callosum,Infarction
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