Nickoloff E L, Leo F, Reese M
Radiology. 1978 Nov;129(2):509-14. doi: 10.1148/129.2.509.
Five different methods for preparing sensitometric strips used to monitor the precision of automated film processors are compared. A method for determining the sensitivity of each system to processor variations is presented; the observed statistical variability is multiplied by the system response to temperature or chemical changes. Pre-exposed sensitometric strips required the use of accurate densitometers and stringent control limits to be effective. X-ray exposed sensitometric strips demonstrated large variations in the x-ray output (2 omega approximately equal to 8.0%) over a period of one month. Some light sensitometers were capable of detecting +/- 1.0 degrees F (+/- 0.6 degrees C) variations in developer temperature in the processor and/or about 10.0 ml of chemical contamination in the processor. Nevertheless, even the light sensitometers were susceptible to problems, e.g. film emulsion selection, line voltage variations, and latent image fading. Advantages and disadvantages of the various sensitometric methods are discussed.
比较了用于监测自动洗片机精度的五种不同制备感光测定条的方法。提出了一种确定每个系统对洗片机变化敏感度的方法；将观察到的统计变异性乘以系统对温度或化学变化的响应。预曝光的感光测定条需要使用精确的密度计和严格的控制限度才能有效。在一个月的时间里，X射线曝光的感光测定条显示出X射线输出有很大变化（2ω约等于8.0%）。一些光敏感计能够检测到洗片机中显影剂温度±1.0华氏度（±0.6摄氏度）的变化和/或洗片机中约10.0毫升的化学污染物。然而，即使是光敏感计也容易出现问题，例如胶片乳剂选择、线路电压变化和潜影消退。讨论了各种感光测定方法的优缺点。
