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静态CT行包安检系统关键技术研究
引用本文:唐利华,张国光,张健,闫平,张雨. 静态CT行包安检系统关键技术研究[J]. 原子能科学技术, 2021, 55(5): 933-938. DOI: 10.7538/yzk.2020.youxian.0373
作者姓名:唐利华  张国光  张健  闫平  张雨
作者单位:中国原子能科学研究院 核技术应用研究所,北京102413
摘    要:本文介绍了安检用静态CT技术的基本原理,对基于超顺排碳纳米管技术的冷阴极X射线源、基于光子计数技术的多能谱X射线成像技术和安检用静态CT系统图像重建算法等进行了研究。冷阴极X射线源由基于超顺排碳纳米管技术的冷阴极X射线管、两套高压系统和1个控制系统组成,在130 kV以下可稳定工作。研制并测试了一款具有三能谱成像功能的光子计数型X射线探测器系统。对安检用静态CT系统图像重建算法进行了讨论,提出了一种解决方法。安检用静态CT系统关键技术的研究为安检用静态CT系统的研制提供了技术基础。

关 键 词:碳纳米管   冷阴极   多能谱探测器   图像重建   静态CT

Research on Key Technology of Static CT Luggage Security Inspection System
TANG Lihua,ZHANG Guoguang,ZHANG Jian,YAN Ping,ZHANG Yu. Research on Key Technology of Static CT Luggage Security Inspection System[J]. Atomic Energy Science and Technology, 2021, 55(5): 933-938. DOI: 10.7538/yzk.2020.youxian.0373
Authors:TANG Lihua  ZHANG Guoguang  ZHANG Jian  YAN Ping  ZHANG Yu
Affiliation:Department of Nuclear Technology Application, China Institute of Atomic Energy, Beijing 102413, China
Abstract:The basic principle of static CT technology was introduced. The cold cathode X-ray source based on super-aligned carbon nanotube technology, multi-energy spectrum X-ray imaging technology based on photon counting technology and image reconstruction algorithm of static CT system were studied. The cold cathode X-ray source which can work stably under 130 kV is composed of a cold cathode X-ray tube based on super-aligned carbon nanotube technology, two sets of high-voltage systems and a control system. A photon counting X-ray detector system with three-energy spectrum imaging function was developed and tested. The image reconstruction algorithm of static CT system was discussed, and a feasible method was proposed. The research on the key technology of static CT system for security inspection provides a technical basis for its development.
Keywords:carbon nanotube   cold cathode   multiple-energy spectrum detector   image reconstruction   static CT
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