Frederick E E, Squillante M R, Cirignano L J, Hahn R W, Entine G
Radiation Monitoring Devices, Inc, Watertown, MA 02172.
Radiology. 1991 Feb;178(2):393-6. doi: 10.1148/radiology.178.2.1987599.
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.
已经设计了一种自动曝光控制器，该控制器可将乳腺摄影中通常使用的胶片、增感屏和射线照相技术的光学胶片密度在1.3 - 6.7厘米厚的有机玻璃范围内控制在0.05以内。这种精度优于目前可用控制器所报告的精度。探测器系统由四个碲化镉探测器组成，并涉及使用一种控制算法来读取探测器并在正确的时间关闭乳腺摄影设备。该算法由微处理器实现，微处理器还提供了方便校准的方法。
