MRI放射状扫描成像诊断半月板撕裂的价值

【摘要】 目的 探讨MRI放射状扫描序列对膝关节半月板撕裂的诊断价值及对临床治疗的指导意义。方法 回顾性分析58 例疑有膝关节半月板撕裂患者的MRI常规扫描及放射状扫描图像,两者相互比较,并将常规扫描诊断结果、常规和放射状扫描两者相互结合后的结果分别与关节镜结果对比分析。结果 常规扫描序列和放射状扫描序列对半月板撕裂的诊断结果无统计学差异;放射状扫描和常规扫描相结合能增加诊断的敏感性和特异性。MRI常规检查(常规扫描结合放射状扫描)对于内侧半月板前角、体部及后角撕裂的诊断灵敏度分别为62.50%(62.50%),80.90%(95.23%),72.72%(78.78%);特异度为98.00%(94.00%),89.19%(78.37%),92.30%(92.30%)。MRI常规检查(常规扫描结合放射状扫描)对于外侧半月板前角、体部及后角撕裂的诊断灵敏度分别为64.28%(78.57%),76.47%(88.00%),82.35%(94.11%);特异度为97.72%(96.45%),92.68%(85.36%),97.56%(97.56%)。结论 MRI 常规扫描结合放射状扫描对半月板边缘部、近根部的损伤以及半月板损伤的细节显示优于常规扫描,二者结合可减少假阴性率和假阳性率,放射状扫描序列可作为重要的辅助诊断方法。

The value of radial MR Imaging in menicus tear of the knee

Objective To investigate the utility of the radial MR imaging in the interrogation of meniscal lesions and its instructional value for clinical management. Methods In the study, we retrospectively evaluated 58 patients who underwent MR imaging of the knee and arthroseopy. The radial and conventional images were interpreted separately and then in combination, and findings were compared with arthroseopic reports. Results There was no statistical difference between the interpretations of the radial and conventional images. When the interpretations of the radial and conventional images were combined, the sensitivity and specificity improved slightly. Sensitivity and specificity for meniscal tears were accurate diagnosed by conventional scanning method （radial and conventional scanning method） were 62.50% （62.50%）, 80.90% （95.23%）, 72.72% （78.78%） ; 98.00% （94.00%）, 89.19% （78.37%）, 92.30% （92.30%）. Sensitivity and specificity for meniscal tears were accurate diagnosed by conventional scanning method （radial and conventional scanning method） were 64.28% （78.57%）, 76.47% （88.00%）, 82.35% （94.11%）, 97.72% （96.45%）, 92.68% （85.36%）, 97.56% （97.56%）. Conclusion The radial images increased the conspicuity of meniscal tears. When the interpretations of the radial and conventional images are combined, the diagnostic accuracy increases, the radial MR Imaging is helpful means for the evaluation of meniscal tears.