The Impedance Property of Electrode Used in Electrical Bio-impedance Measurement
The object of electrical bioimpedance measurement is the impedance or impedance changes of biologic tissue. The electrode used in electrical bioimpedance measurement works under AC stimulation, the electrode impedances of both DC and AC, the stability of them are much important. AC and DC impedance properties of four kinds of one-off Ag/AgCl ECG electrodes produced by different manufactories, and the variability of them have been studied in this paper. It turns out that the AC and DC impedance and the variability of different kinds of electrode are different significantly. After stimulated for a long time by AC current, the electrode resistance value between positive direction and negative direction have a notable difference. It suggests that the DC resistance character of the measured electrode changes greatly when the electrode used in impedance measurement.
Electrode Electrical Bioimpedance Measurement Electrical Impedance Tomography AC Impedance DC Impedance
Gong WeiYan Lv JingHua Wang Yan Sha Hong Zhao Shu Ren ChaoShi
Institute of Biomedical Engineering Chinese Academy of Medical Sciences & PUMC Tianjin,China
国际会议
北京
英文
1-3
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）