【摘要】 目的 探讨MRI对前交叉韧带损伤诊断的假阳性及假阴性,提高MRI诊断水平。方法 回顾性分析68例(72膝)膝关节外伤后临床怀疑前交叉韧带损伤患者的MRI检查结果,并与关节镜检查结果进行对照分析。结果 本组68例(72膝)膝关节外伤患者中,以关节镜结果为标准,MRI诊断结果:真阳性数52例,真阴性数13例,假阳性数5例,假阴性数2例。灵敏度、特异度、假阳性率及假阴性率分别为96.3%,72.2%,6.9%,2.8%,诊断正确率90.3%。结论 MRI是诊断前交叉韧带损伤极有价值的无创方法,但存在一定的假阳性和假阴性,需要结合患者临床病史和更细致的MRI分析。更多还原

【Abstract】 Objective To investigate the false positive and the false negative of anterior cruciate ligament tear at MR imaging,so that to improve MRI diagnosis for anterior cruciate ligament tear.Methods MR imaging results in 68 cases(72 knees) suspected with anterior cruciate ligament tear clinically were retrospectively reviewed and compared with that of arthroscopy.Results Of 68patients(72 knees),the results of arthroscopy were taken as gold standard,MRI diagnostic results of anterior cruciate ligament injury were as follows:true positive in 52 cases,true negative in 13 cases,false positive in 5 cases and false negative in 2 cases.The sensitivity,specificity,false positive rate,false negative rate and accuracy in diagnosing anterior cruciate ligament tear with MR imaging were 96.3%,72.2%,6.9%,2.8%,90.3% respectively.Conclusion MRI is a very valuable and non-invasive method for the diagnosis of anterior cruciate ligament injury,but which is still with false positive and false negative,so MR imaging findings is necessary to combine clinical examination,otherwise,more detailed MRI analysis should be done to give precise diagnosis.更多还原