Objective To investigate the difference in imaging quality and X ray 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。

youdao

Purpose To establish a screen film system sensitometric method of X ray 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。

youdao

A method of developing X ray inspector based on scintillation screen and scientific grade CCD camera, which is can be applied to the case of high and low energy X ray imaging testing, is put forward.

提出了利用闪烁屏和科学级CCD相机研制适用于高、低能工业X射线成像检测内视仪的方法。

youdao

In Total Recall, Metrolight Studios created the animated skeletons that are seen running and fighting behind a giant security X-ray screen in the future.

FORBES

The WHO has praised the UK's "Find and Treat" service, which uses a mobile X-ray van to screen homeless people and drug addicts for TB.

BBC: TB: Plan to tackle rise in drug-resistant cases

The X-ray machines that screen passenger baggage have a patchy record.

ECONOMIST: Bureaucracy not technology