| 静态CT行包安检系统关键技术研究 |
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| 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. |
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| 作者姓名： | 唐利华 张国光 张健 闫平 张雨 |
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| 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 |
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| 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。
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| 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 |
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| 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. |
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| Authors: | TANG Lihua ZHANG Guoguang ZHANG Jian YAN Ping ZHANG Yu |
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| Affiliation: | Department of Nuclear Technology Application, China Institute of Atomic Energy, Beijing 102413, China |
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| 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. |
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| Keywords: | carbon nanotube cold cathode multiple-energy spectrum detector image reconstruction static CT |
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