Dagenais M E, Clark B G
Montreal General Hospital, McGill University, Québec, Canada.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1995 Feb;79(2):238-45. doi: 10.1016/s1079-2104(05)80290-2.
The diagnostic utility of intra-oral images obtained from the RVG second generation digital imaging system are compared with standard film images with the use of receiver operating characteristic analysis. Ten phantoms were constructed, each with 8 extracted teeth that had 12 approximal surfaces per phantom with holes drilled randomly to simulate approximal caries. Three images of each phantom were tested: a conventional film image, a thermal paper print, and a screen image. The images were rated by 26 dentists at separate sessions according to their confidence in the visibility of the simulated caries. A series of receiver operating characteristics curves were computed from the resulting 3120 decisions that indicate consistently greater success at detection of the holes on the film images. A full statistical analysis is given, and recommendations are made with respect to the use of this unit.
利用接受者操作特征分析，将从RVG第二代数字成像系统获得的口腔内图像的诊断效用与标准胶片图像进行比较。构建了10个模型，每个模型有8颗拔出的牙齿，每个模型有12个邻面，随机钻孔以模拟邻面龋。对每个模型的三张图像进行测试：一张传统胶片图像、一张热敏纸打印图像和一张屏幕图像。26名牙医在不同的时间段根据他们对模拟龋可见性的信心对图像进行评分。根据由此产生的3120个判断计算出一系列接受者操作特征曲线，这些曲线表明在胶片图像上检测孔洞的成功率始终更高。给出了完整的统计分析，并就该设备的使用提出了建议。
