Weberling R
Rontgenblatter. 1982 Jun;35(6):248-54.
A control method to check the reproduction of x-Ray film processors and necessary instruments is presented. The application of a light sensitometer allows the production of test films daily, independent of x-Ray exposures, x-ray film cassettes and x-ray intensifying screens. The optical densities on the test films will be read by means of a densitometer and the results are plotted on a special control chart. A limitation through optical densities of +/- 0,15 for Speed Index and +/- 0,20 for Contrast Index determines the tolerance variation for x-ray film processors. Targets of this control method are uniform image quality, dose reduction and saving of cost.
介绍了一种用于检查X射线胶片冲洗机再现性的控制方法及所需仪器。使用感光计能够每天制作测试胶片，而无需依赖X射线曝光、X射线暗盒和X射线增感屏。测试胶片上的光学密度将通过密度计读取，并将结果绘制在特殊的控制图上。对于感光度指数，光学密度±0.15的限制以及对于对比度指数，光学密度±0.20的限制确定了X射线胶片冲洗机的公差变化。这种控制方法的目标是实现均匀的图像质量、降低剂量和节省成本。
