60Co双投影辐射成像系统中的辐射信息处理与实现

doi:10.7538/tws.2021.youxian.070

摘要/Abstract

摘要： 针对清华大学研制成功的⁶⁰Co双投影数字辐射成像系统中两个⁶⁰Co放射源之间存在γ光子散射影响的问题，本文提出一种综合的辐射信息处理方法，包括使用散射校正算法和物理隔离对两源之间的散射进行校正，对辐射图像处理算法进行改进，并设计建造了辐射信息处理和分析平台。该方法有效降低了两个放射源之间的散射影响，获得了更加清晰的辐射图像，并开发了专用的辐射信息处理平台。本工作已应用在某核设施出入口，运行两年多时间里，联调稳定可靠，实现了同类检测系统的应用创新。

关键词: 双投影, 辐射成像, 光子散射校正, C#

Abstract: The Tsinghua University successfully invented a dual-projection digital radiography system, which adopts two ⁶⁰Co radiation sources aiming at two patented high-pressure gas chamber array detectors respectively. The system can obtain both vertical and horizontal projections from one scan, providing more information for image examination. Comparing with traditional single-projection system, the dual-projection system adopts two ⁶⁰Co radiation sources that are deployed on the side and at the bottom respectively, but the adoption of two radiation sources also brings problems like γ photon scatter and more complicated radiation information process, and image processing algorithms needs improving to obtain radiation images of better quality. To solve the above-mentioned problems, this paper presents a comprehensive radiation information processing method, including correcting the photon scatter between two radiation sources, designing and implementing a radiation information processing and analyzing platform, and improving radiation image processing algorithms. This work has been applied in the system at a nuclear facility access for over two years and proved to be reliable, achieving application innovation among similar-type systems.

Key words: dual-projection, radiography, photon scatter correction, C#

郭肖静, 丛鹏, 陈柳, 孙跃文. ⁶⁰Co双投影辐射成像系统中的辐射信息处理与实现[J]. 同位素, 2022, 35(5): 376-381.

GUO Xiaojing, CONG Peng, CHEN Liu, SUN Yuewen. Radiation Information Process and Implement in a ⁶⁰Co Dual-projection Digital Radiography System[J]. Journal of Isotopes, 2022, 35(5): 376-381.

参考文献

［1］安继刚. 钴-60数字辐射成像检测技术回顾与展望［J］. 同位素,2015,28(4):193-200.
An Jigang. Review and prospect of cobalt-60 digital radiography inspection technology［J］. Journal of Isotopes, 2015, 28(4): 193-200（in Chinese）.
［2］安继刚，周立业，刘以思，等. 60Co集装箱检测系统的研制［J］. 核电子学与探测技术，1998，18(2):81-84.
An Jigang, Zhou Liye, Liu Yisi, et al. Research and construction of ⁶⁰Co container inspection system［J］. Nuclear Electronics & Detection Technology, 1998, 18(2): 81-84（in Chinese）.
［3］苗积臣，吴志芳，刘锡明. TC-SCAN集装箱检测系统图像采集站软件设计［J］. 核电子学与探测技术，2001，21(2)：121-123.
Miao Jichen, Wu Zhifang, Liu Ximing. The design of the software in data collect workstation of TC-SCAN container inspection system［J］. Nuclear Electronics & Detection Technology, 2001, 21(2): 121-123（in Chinese）.
［4］赵曦，李立涛，向新程，等. 双投影法识别客体形状及其物性［J］. 核电子学与探测技术，2016，36(5):457-460.
Zhao Xi, Li Litao, Xiang Xincheng, et al. Shape and physical property analysis through dual-projection system［J］. Nuclear Electronics & Detection Technology, 2016, 36(5): 457-465（in Chinese）.
［5］倪民子，王振涛，丛鹏，等. ⁶⁰Co双投影辐射成像系统中的散射干扰模拟研究［J］. 核技术，2020，43(4):040202-1-040202-6.
Ni Minzi, Wang Zhentao, Cong Peng, et al. Simulation study on scattering interference in ⁶⁰Co dual-projection radiation imaging system based on Monte Carlo method［J］. Nuclear Techniques, 2020, 43(4): 040202-1-040202-6（in Chinese）.
［6］Li Guangchao, Cong Peng, Guo Xiaojing, et al. Image Calibration based on dynamic no-load data for the ⁶⁰Co gantry-movable dual-projection radiography inspection system［C］∥Proceedings of 2020 28th International Conference on Nuclear Engineering, Joint With the ASME 2020 Power Conference, ICONE28-POWER2020.Anaheim, California, USA: ［s. n.］, 2020.
［7］Peng Cong, Li Litao, Wang Zhentao, et al. ⁶⁰Co gantry-movable dual-projection radiography inspection system［C］. Proceedings of ICONE-27, 27th International Conference on Nuclear Engineering.Ibaraki, Japan: ［s. n.］, 2019.
［8］International Atomic Energy Agency. Nuclear security recommendations on physical protection of nuclear material and nuclear facilities［R］. Vienna: IAEA Nuclear Security Series, 2011.
［9］安继刚. 钴-60数字辐射成像集装箱检测系统［M］. 北京:清华大学出版社,2003:90-100.
［10］吴志芳,苗积臣. 双视角⁶⁰Co集装箱检测系统的研制［J］. 原子能科学技术,2015,49(9):1695-1699.
Wu Zhifang, Miao Jichen. Development of dual-perspective ⁶⁰Co container inspection system［J］. Atomic Energy Science and Technology, 2015, 49(9): 1695-1699(in Chinese).
［11］丛鹏. 大型集装箱CT系统图像重建研究［J］. 原子能科学技术,2003,37(5):464-466.
Cong Peng. Research on the image reconstruction of the container CT system［J］. Atomic Energy Science and Technology, 2003, 37(5): 464-466(in Chinese).
［12］Nuclear Security Summit 2016 Communique［R］. Washington: Office of the Press Secretary, 2016.
［13］苗积臣，薛岳，吴志芳，等. 双视角Co-60集装箱立体成像技术研究［C］∥2014年全国射线数字成像与CT新技术研讨会论文集. 中国厦门:［s. n.］,2014.
［14］胡克敏，吴志芳，苗积臣，等. 凸度测量中的散射校正研究［J］. 原子能科学技术,2015,49(7):1325-1329.
Hu Kemin, Wu Zhifang, Miao Jichen, et al. Study on scattering correction in crown measurement［J］. Atomic Energy Science and Technology, 2015, 49(7): 1325-1329(in Chinese).
［15］李毅强,安继刚,邬海峰,等. 一种新型小像素气体电离室阵列探测器［J］. 核电子学与探测技术,2002，22(3):237-239.
Li Yiqiang, An Jigang, Wu Haifeng, et al. Development of a new kind little pixel gas chamber array［J］. Nuclear Electronics and Detection Technology, 2002, 22(3): 237-239(in Chinese).

[1]	吴志芳;刘锡明;王立强;苗积臣. 射线技术在工业领域的应用[J]. 同位素, 2020, 33(1): 1-13.
[2]	安继刚. 钴-60数字辐射成像检测技术回顾与展望[J]. 同位素, 2015, 28(4): 193-200.
[3]	刘锡明;吴志芳;谈春明;张颜民. 用于γ辐射成像系统的⁶⁰Co源容器的设计[J]. 同位素, 2012, 25(3): 179-181.
[4]	作者. 用蒙特卡罗方法对~(60)Co数字辐射成像系统检测射线束的准直研究[J]. 同位素, 2003, 16(2 ): 96-96 .
[5]	作者. 大型集装箱辐射检测系统的研制 [J]. 同位素, 1995, 8 (1 ): 16-20 .

⁶⁰Co双投影辐射成像系统中的辐射信息处理与实现

Radiation Information Process and Implement in a ⁶⁰Co Dual-projection Digital Radiography System

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 5

编辑推荐

Metrics