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Radiology, Vol 122, 252-253, Copyright © 1977 by Radiological Society of North America

ARTICLES

An automatic x-ray exposure controller for mammography

JH Rose Jr and CM Berdahl

A solid state sensor and associated electronic apparatus has been developed which automatically measures and controls film exposures when used with low-energy diagnostic equipment. When the kilovoltage is held constant, exposure is determined by the quantity of photons which reach the film, after passing through the breast. When the sensor is placed under the film, consistently good exposure density has been obtained. The design and installation of the sensor and exposure controller is presented.




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RADIOLOGY RADIOGRAPHICS RSNA JOURNALS ONLINE
Copyright © 1977 by the Radiological Society of North America.