摘要
为了获得宽射线束医用诊断计算机断层摄影装置(CT)X射线辐射源的剂量指数测量结果的合理不确定度,本研究基于140mm电离室测量宽射线束医用CT容积剂量指数的数学模型,通过对其不确定度来源进行分析从而得出宽射线束CT辐射剂量指数的测量结果扩展不确定度。
In order to reasonably evaluate the uncertainty of dose index measurement results of X-ray radiation source in wide-beam medical diagnostic computed tomography(CT), this study is based on the mathematical model of measuring the volumetric dose index of wide-beam medical CT with 140 mm long rod ionization chamber, and analyzes the source of its measurement uncertainty, so as to analyze the extended uncertainty of the measurement results of wide-beam CT radiation dose index.
作者
陈坤锋
罗雄峰
项毅
胡洁
丁阳
喻旭东
Chen Kunfeng;Luo Xiongfeng;Xiang Yi;Hu Jie;Ding Yang;Yu Xudong(Yiyang Institute of Metrology,Yiyang 413000;Metrology Test Center of Hengyang,Hengyang 421001)
出处
《仪器仪表标准化与计量》
2022年第6期32-34,共3页
Instrument Standardization & Metrology
基金
益阳市2020年科技创新计划项目(2020YR07)
湖南省市场监督管理局科技计划项目(编号:2020KJJH52)
衡阳市科技计划项目(编号:2019JH010939)。
