双能X射线骨密度仪骨密度测量值线性校正及不确定度评定  

Linear correction and uncertainty evaluation of bone mineral density measurement value of dual energy X-ray absorptiometry

作　　者：邹建新 王鹏德[1] 孙荣荣[1] Zou Jianxin;Wang Pengde;Sun Rongrong(Shanghai Institute of Measurement and Testing Technology)

机构地区：[1]上海市计量测试技术研究院

出　　处：《上海计量测试》2020年第4期39-42,共4页Shanghai Measurement and Testing

摘　　要：介绍了利用线性回归原理校正超差的双能X射线骨密度仪骨密度测量值的方法,通过实例分析了校正值的不确定度来源,结合腰椎模体的三个椎骨样品测量数据作了校正值不确定度的评定,结果表明:影响校正值不确定度的主要因素是校正方程的斜率和截距。This paper introduces the method of using linear regression principle to correct the out-of-tolerance bone mineral density measurement results of dual energy X-ray absorptiometry,and analyzes the source of the uncertainty of the correction value through a case study,the uncertainty of the correction value is evaluated based on the measurement data of three vertebrae samples of lumbar phantom,the result demonstrates that the main factors affecting the uncertainty of correction value are the slope and intercept of the correction equation.

关 键 词：双能X射线骨密度仪 骨矿密度 线性校正 不确定度评定 

分 类 号：R816.8[医药卫生—放射医学]