生物组织电导率磁感应测量原理及系统研究

Study on the principles and system of measurement biological tissue conductivity with magnetic induction method

生物组织电导率磁感应测量是一种无接触式的测量技术,主要应用在医学磁感应成像领域。本文回顾了磁感应测量技术的发展历史及现状,指出了其研究意义。介绍了磁感应测量技术的原理,通过仿真绘出了场域内的涡流流向和涡流密度幅值分布图。结果显示当场域内有异物存在时,涡流的流向会发生改变,且异物存在区域的涡流幅值明显区别于周围区域的涡流幅值。最后给出了仿真实验结果,通过模拟水槽及生物组织实验,证明通过磁感应的方法测量生物组织电导率是可行的,并指出了磁感应测量技术在医学成像领域的发展前景。

Magnetic induction measurement of the biological tissue technology. And this technology is used in medical field recently. ment of magnetic induction measurement. A general introduction is conductivity is a contactless medical measurement This paper presents the history and the developgiven together with a description of the theoretical background. The eddy current flow maps and the distributions of the current density were presented. The experiment results show that when there were some different conductivity objects in the field, the eddy current flow direction will be changed , and in the regions of these objects, the magnitude of eddy current was distinguished from nearby areas. The structure of the measurement system and the result of the primary experiment of magnetic induction measurement were presented and some potential applications were suggested.