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X-ray film changers that transport cassettes containing film sheet, rather than film. The cassettes also include a pair of compatible intensifying screens with adequate pressure to ensure good film-screen contact. Cassette changers accommodate cassettes ranging in size from 30 x 120 cm (12 x 47 inches) to 35 x 90 cm ( 14x 36 inches); they may be used in exams (e.g., peripheral angiography) not requiring the higher film rates provided by sheet or roll changers.
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