Buckwalter K A, Braunstein E M, Janizek D B, Vahey T N
Department of Radiology, Indiana University Hospital, Indianapolis 46202-5253.
Radiology. 1993 Jun;187(3):827-30. doi: 10.1148/radiology.187.3.8497639.
Narrow window width photography of magnetic resonance (MR) images of knee menisci is promoted as a useful tool in the detection of meniscal tears. To assess the diagnostic efficacy of this method, conventional and narrow window width MR images of 48 patients (96 menisci, 37 tears) were interpreted by two experienced observers. Images were graded on a five-point scale to enable receiver operating characteristic (ROC) curve analysis. The ROC curves constructed from the conventional window width interpretations were similar to those of the narrow window width interpretations for both observers. It was not possible to prove that the areas under the two curves were significantly different. This suggests that there is no globally significant improvement in the detection of meniscal tears when narrow window width images are used for interpretation.
膝关节半月板磁共振（MR）图像的窄窗宽摄影被推崇为检测半月板撕裂的一种有用工具。为评估该方法的诊断效能，两位经验丰富的观察者对48例患者（96个半月板，37处撕裂）的传统和窄窗宽MR图像进行了解读。图像按五点量表分级，以进行受试者操作特征（ROC）曲线分析。两位观察者根据传统窗宽解读构建的ROC曲线与窄窗宽解读构建的曲线相似。无法证明两条曲线下的面积存在显著差异。这表明，当使用窄窗宽图像进行解读时，在半月板撕裂检测方面并无整体上的显著改善。
