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电阻抗描记法是通过两只馈电电极给生物体输入阈下高频恒值电压或电流,由原电极或另一对电极引出局部的电压,通过相应的仪表检测和记录出局部的电阻抗变化。由于整体任一局部的电阻抗变化与心脏射血引起的血流波动值有关。因而也有人将它叫做血流图的。电阻抗描记法已有悠久的历史。早在本世纪初(1907),Cremer等就进行生物标本的电阻抗测量。本世纪中期,该法从理论研究和实际应用两方面发展着。前者指一些生理学家用此法作细胞电阻抗测量,在研究
Electrical impedance spectroscopy is through two feeding electrodes to the biological input threshold constant voltage or current under the threshold voltage from the original electrode or another pair of electrodes leads to the local voltage through the corresponding instrument to detect and record the local electrical impedance changes. Due to the overall change in any part of the electrical impedance and blood flow caused by cardiac ejection fluctuations related. Some people call it a blood flow chart. Electrical impedance spectroscopy has a long history. As early as the beginning of this century (1907), Cremer et al. Performed electrical impedance measurements on biological specimens. In the middle of this century, the law has been developed both theoretically and practically. The former refers to some physiologists using this method for the measurement of electrical impedance of cells in the study