Accurate automatic exposure controller for mammography: design and performance.
Accurate automatic exposure controller for mammography: design and performance.
复制标题
用于乳房 X 线摄影的精确自动曝光控制器：设计和性能。
DOI：
10.1148/radiology.178.2.1987599
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发表时间：
1991
期刊：
影响因子：
19.7
通讯作者：
Entine,G
中科院分区：
文献类型：
--
作者：
Frederick,EE;Squillante,MR;Cirignano,LJ;Hahn,RW;Entine,G
设计了一种自动曝光控制器，可将乳房X线摄影中通常使用的胶片、屏幕和放射线照相技术的光学胶片密度控制在1.3-6.7-cm厚度的Lucite范围内的0.05以内。这种精确度优于目前可用的控制器的报告。探测器系统由四个碲化镉探测器组成，并涉及使用控制算法来读取探测器并在正确的时间关闭乳房X线摄影装置。该算法由微处理器实现，该微处理器还提供了用于方便校准的手段。
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.