便携式数字X射线光锥耦合CCD成像系统研究  

Research on portable digital X-ray optical fiber taper coupling to CCD imaging system*

作　　者：王志社[1] 陈树越[1] 曾光宇[1] 王晓霞[1] 

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《传感器与微系统》2007年第9期26-28,共3页Transducer and Microsystem Technologies

基　　金：山西省高等学校科技研究开发项目(20041222)

摘　　要：与光学透镜和CCD的耦合方法相比,光锥和CCD的耦合器件具有体积小、重量轻、耦合效率高的特点。分析了光锥和CCD的耦合效率对整个成像系统信噪比的影响,阐述了光锥和像增强器、CCD的耦合方法。实验测试结果表明:成像系统的空间分辨力达到4lpixel/mm;对人手的X射线透视结果表明:手部骨骼轮廓清晰,能够对其病变做出准确诊断。Compared to a lens-coupled CCD camera system,the CCD camera coupled with optical fiber taper has less cubage,lighter weight and higher collection efficiency. The influence of coupling efficiency of optical fiber taper with CCD on signal-to-noise ratio of image system is analysed. In addition , the coupling method of optical fiber taper coupling with generation image intensifier and CCD is expatiated. Inspection result shows that the resolution of imaging system is 41 pixel/mm and the expeiment for radiographic image of people hand bones indicates that imaging system can be used to medical diagnoses.

关 键 词：光锥 X射线像增强器 电荷耦合器件 空间分辨力 

分 类 号：R318.6[医药卫生—生物医学工程]