X光机数字化的研究进展  

Present and development of digital X-ray imaging technology

作　　者：乔文[1] 严惠民[1] 

机构地区：[1]浙江大学国家光学仪器工程技术研究中心,浙江杭州310027

出　　处：《光学仪器》2007年第5期80-84,共5页Optical Instruments

摘　　要：数字化X光机相对于传统屏片式X光机具有的高灵敏度,低噪声,数字化图片等优点。详细介绍两种X光机数字化方法:计算机X射线摄影(CR)和数字X射线摄影系统(DR)的组成部分、工作原理和最新进展。最后给出了各种X光机量子探测率和MTF随空间分辨力变化曲线,说明基于直接型平板探测器的DR系统具有更优越的性能,是数字化X光机的最终发展方向。Compared with traditional film-screen system, digital X-ray imaging technology offers a number of clinical advantages such as higher sensitivity, lower intrinsic noise and availability of the images in electronic format. Principle and present of the two major digital X-ray imaging system： computed radiography （CR） and digital radiography （DR） are introduced in detail. Furthermore, the DQE and MTF curve for the different types of digital X-ray imaging shows that direct digital radiography owns the best characteristics and would be the final production of digital X-ray imaging technology.

关 键 词：数字化X光机 计算机X射线摄影系统 数字X射线摄影系统 直接型平板探测器 

分 类 号：TH774[机械工程—仪器科学与技术]