Kitts E I
Diagnostic Imaging Research Laboratory, Sterling Diagnostic Imaging, Brevard, NC 28712-0267, USA.
Radiographics. 1996 Nov;16(6):1467-79; quiz 1464-5. doi: 10.1148/radiographics.16.6.8946547.
An image containing the equivalent of almost 1 billion digital bits of diagnostic information can be recorded and displayed on a single sheet of film with use of a high-resolution screen-film radiographic system. The information storage capacity, versatility, and very low cost of screen-film radiographic systems are impressive. However, the inherent coupling of the recording and display functions does not allow optimization of these two functions independently, and this limitation has important implications for optimizing the radiographic image. The photographic process, including latent image formation and chemical development of that latent image, depends on many complex, time- and temperature-dependent phenomena that must be taken into consideration for optimizing the diagnostic image. Once the diagnostic image is processed and ready for viewing by transillumination, the complex response of the human eye requires careful attention to viewing conditions to optimize the information transfer from the film to the human observer.
使用高分辨率增感屏 - 胶片射线照相系统，一张胶片就能记录并显示包含近10亿位数字诊断信息的图像。增感屏 - 胶片射线照相系统的信息存储容量、多功能性及极低的成本令人印象深刻。然而，记录和显示功能的内在耦合使得无法分别独立优化这两项功能，这种限制对优化射线照相图像具有重要影响。摄影过程，包括潜影形成和潜影的化学显影，取决于许多复杂的、与时间和温度相关的现象，为优化诊断图像必须考虑这些现象。一旦诊断图像经过处理并准备好通过透照进行查看，人眼的复杂响应要求仔细关注查看条件，以优化从胶片到人类观察者的信息传递。
