血液的交流电导特性研究

　 来源：120online    　 日期：2007-05-09

　　摘要　对血液的交流电特性做了较全面的研究。针对血液这一特殊对象，在测试方法及测量系统设计中做了较深入的工作。在1 Hz～10 MHz频率范围内测定了正常成人全血的电频谱特性。实验发现，正常成人血液电导随测量信号频率增加在100 Hz～10 kHz范围内有显著的增加，但相位基本不变。考虑到血液的这一电特性，将对以前电导法测红血球压积、血液粘度等工作做一定的补充和修正，并帮助我们建立更合理的血液等效电模型。

The Alternation Current Conductive Property of Blood

　　Huang Hua　Yuan Zhirun　Hu Maoqing　Kang Zhenhuang

　　Biomechanics Institute, Sichuan University, Chengdu　610065

　　Medical Department,Sichuan Education College of Medical Science, Chengdu　610041

　　Abstract　The blood electro-frequency properties of normal human body were investigated in the range of 1Hz-10MHz. The method of testing and the equipment were examined to meet the need for the measurment of blood property. In the experiment, it was discovered that the electric conductivity of blood increased obviously with the increase of testing frequency in the rage of 100Hz-10KHz, but almost no change in phase was noted. This result suggests it is necessary to modify the previous work and build up a reasonable equivalent electric model of blood.

　　Key words　Blood　Alternation current conductance　Frequency property

　　1　引　言

　　血液是生物机体的重要组成部分，包含重要的生理病理信息，现代血液成分分析，生化检测已广泛应用于临床医学的生理病理检测诊断中。作为血液物理特性的一个重要方面，血液的电学特性同力学特性等具有同样重要的研究价值。

Z=R₁+jωC//R₀=R₀(1+jωCR₁)／1+jωC(R₀+R₁)

　　2　材料和方法

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