^(60)Co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 ^(60)Co Dual-projection Digital Radiography System

作　　者：郭肖静[1,2] 丛鹏 陈柳[1,2] 孙跃文 GUO Xiaojing;CONG Peng;CHEN Liu;SUN Yuewen(Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 100084,China;Beijing Key Laboratory of Nuclear Detection&Measurement Technology,Beijing 100084,China)

机构地区：[1]清华大学核能与新能源技术研究院,北京100084 [2]核检测技术北京市重点实验室,北京100084

出　　处：《同位素》2022年第5期376-381,I0001,共7页Journal of Isotopes

基　　金：核能开发项目支持资助(20154602098)。

摘　　要：针对清华大学研制成功的^(60)Co双投影数字辐射成像系统中两个^(60)Co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。The Tsinghua University successfully invented a dual-projection digital radiography system,which adopts two^(60)Co 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.^(60)Comparing with traditional single-projection system,the dual-projection system adopts two^(60)Co 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.

关 键 词：双投影 辐射成像 光子散射校正 C# 

分 类 号：TL811[核科学技术—核技术及应用]