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MRI多征象分析诊断半月板桶柄状撕裂

Chinese Journal of Interventional Imaging and Therapy(2011)

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Abstract
目的 探讨MRI多征象分析诊断半月板桶柄状撕裂(BHT)的价值.方法 回顾性分析84个经关节镜证实为半月板损伤的膝关节的MR图像,其中42个膝关节为半月板BHT,另42个膝关节为非BHT.观察以下8种征象:双后交叉韧带(PCL)征、半月板翻转征、空领结征、领结残破征、后角残破征、厚饼征、碎块内移征及外周残半月板征,分别计算每种征象诊断半月板BHT的敏感度、特异度、阳性预测值、阴性预测值和准确率.结果 双PCL征、半月板翻转征、厚饼征、碎块内移征及外周残半月板征具有相对高的特异度,但除碎块内移征及外周残半月板征的敏感度相对高外,其余6种MRI征象的敏感度均较小.结论 半月板BHT可有多种MRI表现,碎块内移征与外周残半月板征最具诊断价值,而双PCL征、半月板翻转征及厚饼征特异度较高,这些征象的出现强烈提示半月板BHT.
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Key words
Lacerations,Menisci,Magnetic resonance imaging,tibial,Knee joint
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