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Modified motion picture cameras that record fluoroscopic images onto 16 or 35 mm roll film. The image is recorded by the camera from the output phosphor of an image intensifier tube for later playback on cine projectors. The cine camera consists of eight basic parts: a converging lens system, an iris diaphragm, a shutter, an aperture, a pull-down arm, a pressure plate, a film-transport mechanism, and a supply and take-up reel. Cine cameras are mostly used for complex cardiac studies (e.g., cardiac catheterization); they are also used in some angiographic procedures and gastrointestinal examinations
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