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  • Radiographic units designed for breast imaging. These units include a high frequency or constant potential x-ray generator (usually from 20 to 35kV), an automatic exposure control, filters, a collimator, patient positioning features (e.g. compression devices) and an image recording system. Most mammographic units use intensifying screen-film combinations for image recording; some consist of an electrostatic recording system that uses a charged photoconductive plate in place of x-ray film (xeromammography). Mammographic units are primarily used to detect and diagnose breast cancer in asymptomatic women, and also to evaluate palpable masses and other breast lesions.
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