Kool L J, Busscher D L, Vlasbloem H, Hermans J, vd Merwe P C, Algra P R, Herstel W
Department of Diagnostic Radiology, University Hospital Leiden, The Netherlands.
Radiology. 1988 Oct;169(1):35-9. doi: 10.1148/radiology.169.1.3420280.
To evaluate the efficacy of AMBER, a multiple-beam equalization system for chest radiography, the authors performed a nodule detection study using an anthropomorphic chest phantom. AMBER and conventional images were compared. The images were read by four observers, and analysis was done by means of modified receiver-operating characteristic (ROC) curves (free ROC curves [FROC]). The results of the FROC analysis show a significant increase in the detectability of nodules (P less than .001) projected over the mediastinum with the use of AMBER. No significant difference between AMBER and conventional images was noted in detectability of nodules projected over the lung.
为评估用于胸部X光摄影的多束均衡系统AMBER的功效，作者使用拟人化胸部模型进行了一项结节检测研究。对AMBER图像和传统图像进行了比较。由四名观察者解读图像，并通过修正的接受者操作特征（ROC）曲线（自由ROC曲线 [FROC]）进行分析。FROC分析结果显示，使用AMBER时，投射在纵隔上的结节可检测性显著提高（P小于0.001）。在投射于肺部的结节可检测性方面，未发现AMBER图像与传统图像之间存在显著差异。
