γ 射线CT教学实验仪数据采集电路的实现  

Data acquisition realization of γ-ray CT teaching experiment instrument

作　　者：张平[1] 杨琳佳[1] 

机构地区：[1]重庆大学光电技术及系统教育部重点实验室ICT研究中心,重庆400044

出　　处：《计算机工程与设计》2009年第17期4088-4091,共4页Computer Engineering and Design

基　　金：重庆市自然科学基金项目(CSTC;2006BB2160);教育部世界银行贷款招标基金项目(FET-GJ-011)

摘　　要：设计一种小型的CT教学实验仪,以满足大学物理教学实验及科研开发的需要,介绍了CT教学实验仪系统设计原理,在设计中考虑到小型化及安全性的要求,采用了低能的137Cs作为射线源,使用单探测器的系统结构。在数据传输可靠性上采用了USB接口技术,大大提高了设备通用性、方便性。在整个设计中数据采集系统的性能决定了CT教学实验仪的稳定性,以及图像重建数据的精度,他是整个系统研制的重点之一。A kind of small scaled CT teaching experiment instrument is designed to test by satisfying university physical teaching and the research develop of demand. The working principium of the CT teaching experiment instrument principle is introduced. In the design in considering the requirements of miniaturization and security, the didactical experiments instrument of CT uses the low-energy^137Cs to be the γ radial source, and the structure of single-detector. Deliver credibility in the data up adopted USB to connect a people＇ s technique, consumedly raised the equipments in general use, convenience. The data collects the stability that the function of system comes to a decision the CT teaching experiment instrument in the whole design, and picture reconstruction the accuracy of the data, he is one of the point that the whole system develon.

关 键 词：CT 实验 数据采集 USB 采集控制 

分 类 号：TP274.51[自动化与计算机技术—检测技术与自动化装置]