摘要
目的:总结分析半月板桶柄状撕裂的MRI征象和诊断价值。方法:回顾性分析146个经关节镜证实的膝关节MR图像,其中28个膝关节存在半月板桶柄状撕裂,记录如下5种MRI征象:碎块内移征、外周残半月板征、双PCL征、空领结征及双前角征,并分别计算每种征象诊断半月板桶柄状撕裂的敏感度、特异度、准确度、阳性预测值和阴性预测值。结果:5种征象中碎块内移征具有最高的敏感度、准确度和阴性预测值,而双PCL征具有最高的特异性和阳性预测值。结论:半月板桶柄状撕裂具有典型的MRI征象,其中碎块内移征是诊断半月板桶柄状撕裂的最基础、可靠的征象。
Objective：To evaluate the MR imaging findings in diagnosing the bucket handle tears（BHT） of menisci of the knee.Methods：MR imaging of 146 knees with arthroscopy exams were retrospectively evaluated.Based on the results of arthroscopy,28 knees had BHT.Five MRI signs were observed,including internal displaced fragment sign,abnormal circumferential meniscus sign,double posterior cruciate ligament sign,absent bow tie sign and flipped meniscus sign.Sensitivity,specificity,positive and negative predictive values,and accuracy for diagnosing menisci BHT of the five signs were calculated.Results：Of the five MRI signs,the internal displaced fragment sign had highest diagnostic sensitivity,accuracy and negative predictive values.The double posterior cruciate ligament sign has the highest specificity and positive predictive value.Conclusion：BHT of menisci had characteristic MRI findings and the internal displaced fragment sign is the most essential and reliable sign.
出处
《放射学实践》
北大核心
2011年第6期637-640,共4页
Radiologic Practice
关键词
半月板
胫骨
关节疾病
磁共振成像
Menisci
tibial
Joint diseases
Magnetic resonance imaging
