目的 研究探讨MRI影像分析对 膝关节病变的临床诊断价值。方法 从 2013年1月至2015年1月在我科收治的膝关 节病变患者中随机选取70例作为研究对 象。对患者先行MRI检查(观察组)，之后 行X线片检查(对照组)。观察并对比两组 的诊断符合率情况。结果 观察组关节积 液的检出率11.43%、软骨变薄15.71%、 骨质缺损35.71%、半月板受损32.86%均 分别显著高于对照组的1.43%、2.86%、 10.00%、17.14%，差异均有统计学意义(P ＜0.05)。观察组膝关节病变检出的敏感 度84.29%、特异性91.43%均高于对照组的 68.57%、75.71%，差异均有统计学意义(P ＜0.05)。观察组对膝关节病变单病灶的 检出率30.00%、多病灶检出率64.29%均高 于对照组的14.29%、45.71%。观察组对膝 关节病变漏诊率2.86%及误诊率0%均低于 对照组的12.86%、18.57%。结论 MRI诊断 膝关节病变敏感度、特异性较高，可对膝 关节病变准确诊断，有利于提供正确治疗 方案，改善预后，值得重视。

Objective To explore MRI image analysis of the clinical diagnostic value of knee joint disease. Methods From January 2013-January 2015 of knee joint disease patients admitted in our department in 70 cases were randomly selected as the research object. The patients were first given with MRI (observation group), then X-ray examination (control group). Observed and compared two groups of diagnostic coincidence rate. Results The observation group's joint effusion 11.43% 11.43%, 15.71% thinning of the cartilage and bone defect, half leaf plate damaged 32.86% detection rate was significantly higher than that of control group were 1.43%, 2.86%, 10.00% and 17.14%, respectively. Which were statistically significant differences (P<0.05). Observation group's knee lesion detection sensitivity 84.29%, specificity 91.43% was higher than the control group of 68.57%, 75.71%. Which were statistically significant differences (P<0.05). Observation group's knee lesions single lesion inspection rate was more than 30.00%, lesions were higher than in control group of 14.29%, 64.29% and 14.29%. Observation group's knee lesions of missed diagnosis and misdiagnosis rate were 0% 2.86% lower than the control group of 12.86%, 18.57%. Conclusion MRI in the diagnosis of knee joint disease sensitivity, high specificity, accurate diagnosis of knee lesion is beneficial to provide the correct treatment, improve the prognosis, is worthy of attention.