Rosenthal M S, Good W F, Costa-Greco M A, Miketic L M, Eeelkema E A, Gur D, Rockette H E
Department of Diagnostic Radiology, University of Pittsburgh, Pennsylvania 15261.
Invest Radiol. 1990 Aug;25(8):897-901. doi: 10.1097/00004424-199008000-00005.
The question of whether image processing affects a radiologist's diagnostic performance is becoming more important as the digital modalities proliferate. In the multi-observer study reported, the performance of radiologists who interpret a series of posteroanterior digitized chest images displayed on a high-resolution workstation, with and without a set of image processing options, is determined. These include brightness, contrast, reverse look-up tables (black-bone), and two edge enhancement options. Three hundred images were evaluated twice (once in each mode) by each of seven board-certified radiologists, who recorded their confidence ratings for the presence or absence of one or more of the following abnormalities: interstitial disease, nodule, and pneumothorax. The original, unprocessed digital image was available for reference for those sessions in which the processing options were available. With the exception of one reader, receiver operating characteristic (ROC) analysis showed no statistically significant difference between the two modes (with and without processing) for the detection of any of the different abnormalities by individual readers. Likewise, the group as a whole showed no significant difference (P less than .05) for detection of any of the three abnormalities between the two reading modes.
随着数字成像模式的不断普及，图像处理是否会影响放射科医生的诊断性能这一问题变得愈发重要。在报告的多观察者研究中，确定了放射科医生在有和没有一组图像处理选项的情况下，对在高分辨率工作站上显示的一系列数字化后前位胸部图像进行解读时的表现。这些选项包括亮度、对比度、反向查找表（骨像）以及两种边缘增强选项。七名获得委员会认证的放射科医生对300张图像分别在两种模式下（每种模式各一次）进行评估，并记录他们对以下一种或多种异常情况（间质性疾病、结节和气胸）存在与否的置信度评级。在可使用处理选项的那些时段，原始的未处理数字图像可供参考。除一名读者外，接受者操作特征（ROC）分析表明，个体读者在两种模式（有处理和无处理）下检测任何不同异常情况时均无统计学显著差异。同样，总体而言，两种阅读模式在检测三种异常情况中的任何一种时也没有显著差异（P小于0.05）。
