SEMICONDUCTOR EXPOSURE CONTROLLER FOR MAMMOGRAPHRY

辐射监测设备（RMD）在第一阶段的展示， 合同，光伏碲化镉辐射传感器有合适的 用于自动曝光控制器的性能特性。 在第二阶段，将完成探测器研究，硬件和 开发软件，并建立全面运作的原型系统， 与他们的医疗和医疗机构合作， 工业顾问。 第二阶段的具体目标是： 1.建立改进的晶体生长技术，用于生产光伏 具有代表最佳可重复特性的CdTe探测器 第一阶段开发的探测器。 2.进一步研究更好的探测器制造程序， 增强灵敏度、响应速度和噪声特性。 3.开发实现这一概念所需的硬件和软件， 全固态X射线曝光控制器。 4.设计和建造一个全尺寸的便携式实验室原型， 在我们合作者的设施中使用。 5.对原型系统进行广泛的测试，以确保最佳的 性能、可靠性和易用性。 最后，控制器将被设计成新的通用的一部分， 电动乳腺X射线摄影机现在正在由RMD合作者LoRad开发 Corporation.

The Radiation Monitoring Devices (RMD) demonstrated in Phase I of this contract that the photovoltaic CdTe radiation sensor had suitable performance characteristics for use in an automatic exposure controller. In Phase II, the detector research will be completed, the hardware and software developed and fully operational prototype system constructed for testing with clinical phantoms in collaboration with their medical and industrial consultants. The specific aims of Phase II are: 1. Establish improved crystal growth techniques for producing photovoltaic CdTe detectors with reproducible characteristics representative of the best detectors developed in Phase I. 2. Conduct further research on better detector fabrication procedures to enhance sensitivity, speed of response and noise characteristics. 3. Develop the hardware and software needed to implement this concept into an all solid state, x-ray exposure controller. 4. Design and build a full scale, portable laboratory prototype capable of being used at the facilities of our collaborators. 5. Conduct extensive tests of the prototype system to ensure optimum performance, reliability and ease of use under all relevant conditions. Finally, the controller will be designed to become part of the new General Electric mammography machine now being developed by RMD collaborator LoRad Corporation.