Riihimäki E J, Korhola O A, Suoranta H T, Valle M K
Radiology. 1982 Jan;142(1):229-31. doi: 10.1148/radiology.142.1.7053536.
An investigation of light diffusion in x-ray intensifying screens and the prospects for improvement by confining light spread with a special structure are reported. Light diffusion in CaWO4 screens was studied theoretically using computer simulation. The proportion and spatial distribution of light emerging from different depths in the screen were calculated. The introduction of narrow gaps in the screens made it possible to improve these proportions and distributions. The gaps improved the line spread functions, the screen efficiencies, and the average contribution of the absorbed quanta to the light output.
报道了对X射线增感屏中光扩散的研究以及通过特殊结构限制光传播来改进的前景。使用计算机模拟从理论上研究了CaWO4屏中的光扩散。计算了从屏中不同深度出射的光的比例和空间分布。在屏中引入窄间隙可以改善这些比例和分布。这些间隙改善了线扩展函数、屏效率以及吸收量子对光输出的平均贡献。
