'X-Ray Film' Searchterm 'X-Ray Film' found in 1 term [ • ] and 10 definitions [• ], (+ 9 Boolean[• ] resultsResult Pages : • X-Ray Film
An x-ray film is a photographic film used to generate a visual x-ray image. X-ray films are rarely used as the only radiation detector. Commonly they are used in conjunction with intensifying screens placed in the film cassette, because high resolution films have a poor sensitivity to x-rays. At direct film exposure, only a small amount of x-ray photons will be absorbed and react with the film emulsion. An intensifying screen contains scintillating materials to convert x-ray radiation into light or lows electromagnetic energies. X-ray films provide very good spatial resolution and contrast, but need long exposures times and chemical processing. See also Conventional Radiography and Digital Radiography. • View NEWS results for 'X-Ray Film' (3). •
Chemical, usually acetic acid in the fixer and sodium carbonate in the developer, to neutralize the developer and to swell the gelatin, respectively. See also Film Processor and X-Ray Film. • Autoradiography is a method that uses incorporated radioactive material as the source of the radiation. The image on an x-ray film or nuclear emulsion is recorded by direct contact of the object with photo emulsion. Photographic emulsions have a very high efficiency for beta radiation.
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A cassette is a thin, low x-ray absorption plastic case, for holding the x-ray film. Inside the cassette are intensifying screens for the conversion of x-rays to visible light photons. The intensifying screens are mounted in close contact with the film. Mammography cassettes are equipped with single screens.
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