rare-earth screen

rare-earth screen,

an x-ray-intensifying screen made of rare-earth elements, such as yttrium and gadolinium. These screens enable lower radiation doses to be used while producing acceptable film densities.

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screen

1. a framework or agent used as a shield or protector.

2. to examine.

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fast screen

permits big reduction in exposure to x-ray beam.

screen film

prepared to be used with intensifying screens. The standard film and marketed as being of standard, fast or ultrafast speeds.

rare-earth screen

see rare-earth intensifying screen.