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磁共振增强后液体衰减反转恢复序列在结核性脑膜炎诊断中的应用 被引量:11

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摘要 目的探讨磁共振增强后液体衰减反转恢复(FLAIR)序列在结核性脑膜炎诊断中的应用,以提高结核性脑膜炎的检出率。方法对60例临床证实的结核性脑膜炎的患者,分别进行MR头颅增强后T1WI和FLAIR序列扫描,并比较两者图像中结核性脑膜炎的病变部位、病变信号强度及并发症,进行统计学分析。结果在增强T1WI序列中发现有33例结核性脑膜炎患者表现为强阳性,强阳性率为55.0%。病变位置在脚间池10例、环池11例、外侧裂池17例、四叠体池9例、大小脑表面6例以及侧脑室、第四脑室、桥池各2例。在增强FLAIR序列中全部患者均表现为强阳性,强阳性率为100%。病变位置在脚间池23例、环池21例、外侧裂池28例、四叠体池13例、侧脑室4例、第四脑室19例、大小脑表面13例、桥池10例。两者结核性脑膜炎的强阳性率差异有统计学意义(χ2=21.5,P<0.001)。增强FLAIR发现26例患者出现脑梗死,阳性率43.3%,其中额叶顶叶16例、基底节区8例、脑干2例;发现脑萎缩1例,脑室积水及脑室旁水肿4例。结论在结核性脑膜炎的影像检查中,MR增强FLAIR序列明显优于增强T1WI,是必不可少的检查序列,这有利于结核性脑膜炎及其并发症的早期诊断。
出处 《中华临床医师杂志(电子版)》 CAS 2011年第17期5100-5103,共4页 Chinese Journal of Clinicians(Electronic Edition)
基金 上海市结核病(肺)重点实验室开放基金资助课题(2010K05)
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参考文献14

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二级参考文献22

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