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- W143216612 abstract "This chapter discusses the use of intensifying screens in radiography and of fluorescent screens in fluoroscopy. Although these two techniques are very different, the physical phenomenon involved is the same in both cases. This is, very simply, that some materials are able to absorb X-rays and re-emit, in the form of visible light photons, the energy so extracted from the X-ray beam. The amount of light emitted is strictly proportional to the amount of X-ray energy absorbed that is, in turn, proportional to the X-ray Exposure (mR) to which the screen is subjected. Hence, any pattern (of intensities and Exposures) in the X-ray beam will be converted into an identical but visible pattern. The plates are reused and there is no consumption of costly and potentially scarce materials such as silver, as is the case in photographic radiography. In addition, there are the added benefits of high resolution, high effective local contrast arising from the edge enhancement effect, and high exposure latitude." @default.
- W143216612 created "2016-06-24" @default.
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- W143216612 date "1977-01-01" @default.
- W143216612 modified "2023-10-14" @default.
- W143216612 title "INTENSIFYING AND FLUORESCENT SCREENS AND XERORADIOGRAPHY" @default.
- W143216612 doi "https://doi.org/10.1016/b978-0-7236-0778-6.50021-5" @default.
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