用于双能CT的小型单能量X射线源的开发  

The Development of Compact Single Energy X-ray Source for Dual-energy CT

作　　者：孟德[1] 李斌[1] 樊赟[1] 安洪振[1] 曹健[1] 吴岳雷[1] 

机构地区：[1]环境保护部核与辐射安全中心,北京100082

出　　处：《核电子学与探测技术》2013年第12期1441-1447,共7页Nuclear Electronics & Detection Technology

摘　　要：介绍了一种可用于双能CT的小型单能量X射线源。为了获得稳定的X射线,采用X波段(11.424 GHz)直线加速器加速的多束团电子和Q开关Nd:YAG激光的组合。为了提高X射线通量,采用了激光束循环系统。阐述了双能CT成像、激光束循环的原理和小型单能量X射线源的工作原理。说明了目前系统的构建状况和实验实施状况,并对当前存在的问题和今后的课题做出总结。A Compton scattering X-ray source which can be used for dual -energy CT is introduced .In order to realize stable X-ray generation, multi-bunch electron beam from an X -band （11.424 GHz） linac and Q-switch Nd：YAG laser are adopted .And in order to increase X-ray flux, a laser circulation system is adopt-ed.The principle of dual energy CT imaging , laser circulation and compact dual -energy X-ray source are described.The current status of system construction and the experiments are also illustrated .Finally, a summa-ry of current problems and future research are made .

关 键 词：双能电子计算机X射线断层扫描 小型单能量X射线源 X波段直线加速器 激光束循环系统 

分 类 号：TL99[核科学技术—核技术及应用]