intensifying screen (redirected from intensity of a radiographic beam)

intensifying screen,

n See screen, intensifying.

intensity of a radiographic beam,

n the amount of energy in a radiographic beam per unit volume or area.

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intensifying screen

calcium tungstate screens which fluoresce and transform the invisible x-ray image to a fluorescent blue or ultraviolet one. This reduces the exposure time a great deal. The image is intensified. Rare-earth intensifying screens are more modern and produce more intensification. They also produce different colored light, depending on the rare earth used.

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rare-earth intensifying screen

faster than the standard calcium tungstate screens but much more usable at high kV range. They require the use of special film and safelights.