Objective To investigate the difference in imaging quality and Xray dose for plain film of lumbar vertebrae and abdomen when using blue screen or green screen.
目的探讨感蓝、感绿不同的屏片体系，在腰椎和腹部平片上形成影像质量及入射剂量的差异。
2
Purpose To establish a screen film system sensitometric method of Xray scale exposure by changing the distance between focus and film.
目的建立以焦点胶片距离的改变，取得X线阶段曝光的屏片体系感光测定方法。
3
A method of developing Xray inspector based on scintillation screen and scientific grade CCD camera, which is can be applied to the case of high and low energy Xray imaging testing, is put forward.