医用诊断水平X射线空气比释动能标准装置的建立  

Establishment of Medical Diagnostic Level X-ray Air Kerma Standard Device

作　　者：魏鹏 WEI Peng

机构地区：[1]福建省计量科学研究院

出　　处：《计量与测试技术》2022年第12期83-86,共4页Metrology & Measurement Technique

基　　金：国家市场监督管理总局科技计划项目(项目编号:2019MK03)。

摘　　要：为实现X射线质量检测仪的量值溯源,本文根据YY/T 0481-2016《医用诊断X射线设备测定特性用辐射条件》,建立了管电压(40~150)kV、剂量率(1×10^(-5)~1)Gy/min的医用诊断水平X射线空气比释动能标准装置,RQR2-RQR10、RQT8-RQT10辐射质,以及管电压和曝光时间标准装置,并对其进行实验测试。同时,对空气比释动能率的相对扩展不确定度进行评定,结果为Urel=3.0%(k=2)。In order to realize the measurement traceability of X-ray quality detector, a standard device for X-ray air specific release of kinetic energy for medical diagnostic level with voltage(40~150)kV and dose rate(1×10^(-5)~1)Gy/min was established in accordance with YY/T 0481-2016 "Medical Diagnostic X-ray Equipment-Radiation Conditions for Use in the Determination of Characteristics".RQR2-RQR10, RQT8-RQT10 radiation substance, and the standard device for tube voltage and exposure time were established and tested experimentally.Meanwhile, the relative expanded uncertainty of the specific release kinetic energy rate of air was evaluated, and the result was U_(rel)=3.0%(k=2).

关 键 词：空气比释动能 诊断水平 半值层 管电压 曝光时间 不确定度 

分 类 号：TH774[机械工程—仪器科学与技术]