医用X射线CT机剂量指数检测及影响因素浅析  

Dose Index Detection and Influencing Factors Analysis of Medical X-ray CT Machines

作　　者：张俊 ZHANG Jun(Qianxinan Prefecture Inspection and Testing Center,Xingyi 562400,China)

机构地区：[1]黔西南州检验检测中心,贵州兴义562400

出　　处：《品牌与标准化》2023年第5期124-126,共3页

摘　　要：本文根据现行检定规程JJG 961—2017《医用诊断螺旋计算机断层摄影装置(CT)X射线辐射源》剂量指数的测量模型,在正常工作环境条件下,针对不同测量参数的设置,对同一台医用X射线CT机进行多次剂量指数测量,给出了测量原理及测量过程,分析了管电压、管电流、曝光时间以及层厚这些参数对CT机剂量指数测量的影响。Based on the current verification regulation JJG 961—2017 Medical Diagnostic X-ray Radiation Source for Spiral Computed Tomography(CT) dose index measurement model,this article conducts multiple dose index measurements on the same medical X-ray CT machine under normal working environment conditions for different measurement parameters.The measurement principle and process are provided,and the tube voltage,tube current,and The influence of exposure time and layer thickness on the dose index measurement of CT machines.

关 键 词：医用X射线CT机 测量模型 剂量指数 影响因素 

分 类 号：R197.39[医药卫生—卫生事业管理]