title: Accurate automatic exposure controller for mammography: design and performance.
abstract: An automatic exposure controller has been designed that controls the optical film density for film, screen, and radiographic techniques typically used in mammography to within 0.05 over a range of 1.3-6.7-cm thickness of Lucite. This degree of accuracy is better than that reported for presently available controllers. The detector system consists of four cadmium telluride detectors and involves the use of a control algorithm to read the detectors and turn off the mammography unit at the correct time. This algorithm is implemented by a microprocessor, which also provides the means for a convenient calibration.
authors.affiliation: Radiation Monitoring Devices, Inc, Watertown, MA 02172.
authors.forename: E E
authors.initials: EE
authors.lastname: Frederick
authors.forename: M R
authors.initials: MR
authors.lastname: Squillante
authors.forename: L J
authors.initials: LJ
authors.lastname: Cirignano
authors.forename: R W
authors.initials: RW
authors.lastname: Hahn
authors.forename: G
authors.initials: G
authors.lastname: Entine
mesh_terms: D005260:Female; D006801:Humans; D008327:Mammography / Q000295:instrumentation* / Q000379:methods; D013679:Technology, Radiologic