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  • Devices designed to produce diagnostic-quality copies of radiographic images on duplicating film that has a layered silver-based emulsion on one side. The duplicating film is laid over the original x-ray film, and both films are placed or fed into the duplicator. The films are then exposed to a light source (usually ultraviolet), and the image of the original film is transferred onto the duplicating film. The duplicate is then processed in an x-ray processor. Some duplicators are capable of image subtraction, enlargement, reduction, and enhancement. X-ray film duplicators are used to make copies of films from all imaging technologies (e.g., computed tomography, magnetic resonance imaging, dental radiography); duplicates are used by surgeons, as teaching aids, as evidence in legal proceedings, and for record keeping at patient transfer. The originals can then be stored to maintain the integrity of central files.
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