A New Method for Measurement of Bioelectrical Impedance

Author

Batra, Padma ; Singh, Sukwinder ; Singh, Satyendra Pratap

Author_Institution

Krishna Inst. of Eng. & Technol., Ghaziabad, India

fYear

2011

fDate

3-5 June 2011

Firstpage

740

Lastpage

743

Abstract

The paper describes the theory and practical implementation of a four-electrode method for measuring complex bioimpedance of local tissue. This new method adopts three independent voltages V_in+, V_in-, V_R respectively from the two voltage electrodes and a sample resistor R, which is connected in serial with one of the two voltage electrodes. Theoretical analysis shows that real part Z_real and imaginary part Z_imag of the complex impedance between two voltage electrodes can be acquired from the modular ratios (|V_in+|/|V_R|), (|V_IN-|/|V_R|) and phase difference (_IN+ - _R), (_{IN +} - _R) through simple calculation. The problems with the conventional methods are avoided with this novel technique.

Keywords

bioelectric phenomena; biological tissues; biomedical electrodes; biomedical measurement; electric impedance measurement; bioelectric impedance; complex bioimpedance measurement; four electrode method; local tissue; voltage electrodes; Bioimpedance; Biomedical measurements; Current measurement; Electrodes; Impedance; Impedance measurement; Instruments; bioimpedance; instumentation amplifier; phase gain detector; plethysmography;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Systems and Network Technologies (CSNT), 2011 International Conference on

Conference_Location

Katra, Jammu

Print_ISBN

978-1-4577-0543-4

Electronic_ISBN

978-0-7695-4437-3

Type

conf

DOI

10.1109/CSNT.2011.157

Filename

5966548