低场强磁共振成像诊断半月板撕裂的准确性研究

目的验证低场强磁共振成像(MRI)诊断半月板撕裂的准确性．方法171例患者经低场强MRI检查，显示半月板损伤的情况，后经过关节镜诊断，分别记录检查结果，并进行比较。结果低场强MRI对内外侧半月板撕裂诊断准确度分别为95．9l％、95．9l％，敏感度分别为95．60％、96．47％，特异度分别为96．25％、95．35％。结论低场强MRI对半月板撕裂的诊断有很高的准确性，同时有良好的性价比。

Accuracy of a low-field MRI in diagnosing meniscal tears

Objective To specify the diagnostic accuracy of low-field MRI on meniscal tears. Methods Meniscal lesions were examined by using 0.2 T MRI and checked arthroscopically in 171 cases. The results were recorded and compared. Results From the calculation of the arthroscopic findings and the results by MRI, we obtained the diagnostic accuracy rate of 95.91% for both the medial and lateral menisci, sensitivity of 95.60% for the medial menisci and 96.47% for the lateral menisci, and specificity of 96.25% for the medial menisci and 95.35% for the lateral menisci. Conclusions The low-field MRI can bring about high diagnostic accuracy for meniscal tears and has a good price-performance ratio.