生物电阻抗测量中的正交变换  

Orthogonal Transformation in Bioelectrical Impedance Measurement

作　　者：李镐炜[1] 董秀珍[2] 王跃科[1] 史学涛[2] 付峰[2] 

机构地区：[1]国防科技大学仪器科学与技术系,长沙410073 [2]第四军医大学生物医学工程系,西安710032

出　　处：《生物医学工程研究》2007年第3期228-231,235,共5页Journal Of Biomedical Engineering Research

基　　金：国家自然科学基金资助项目(30270378)。

摘　　要：探求生物电阻抗测量中,欧姆电阻和等效容抗间的数量关系。基于Cole-Cole阻抗模型,采用Cauchy积分公式进行了理论分析,并用多组实验数据对理论分析结果进行验证。验证实验结果在频率域的大部分范围内与理论分析结果一致。研究结果表明:生物电阻抗测量中,欧姆电阻和等效容抗之间存在确定的正交变换关系。To study the relationship between the resistive component and the reactive component of the measured data of bioelectrical impedance.Theoretical proof based on the impedance model and Canchy integral formula was presented, emulation was performed on various experimental data to verify and illustrate the proposition. The emulation result agreeed with the theoretical proof to a great extent in frequency domain. It proves that there existes an orthogonal transformation relationship between the real part and the imaginary part of the bioelectrical impedance measurement.

关 键 词：生物电阻抗 COLE-COLE模型 断层成像 CAUCHY积分 正交变换 

分 类 号：TH79[机械工程—仪器科学与技术] R318[机械工程—精密仪器及机械]