Evaluation of a commercial impedance spectroscopy instrument: inaccuracies and their corrections

Author

Patterson, Robert ; Latterell, Todd

Author_Institution

Minnesota Univ., Minneapolis, MN, USA

Volume

1

fYear

1995

fDate

20-25 Sep 1995

Firstpage

651

Abstract

The accuracy of the Xitron bio-impedance spectrum analyzer was evaluated over a measurement range of 56 to 626 ohms and using lead resistances from 50 to 600 ohms to simulate electrode impedance (Z). Phase errors without lead resistances were up to 14.9°. Lead impedance could add up to an additional 4° error. Although errors of this size could cause serious problems, it appears that by using low impedance electrodes and software corrections of the data significant improvement can be obtained

Keywords

biomedical equipment; biomedical measurement; electric impedance measurement; measurement errors; spectroscopy; 50 to 626 ohm; commercial impedance spectroscopy instrument; complex tissue impedance; electrode impedance; instrument inaccuracies; lead resistances; medical instrumentation; phase errors; software corrections; tissue characteristics determination; Costs; Electrical resistance measurement; Electrochemical impedance spectroscopy; Electrodes; Frequency; Instruments; Phase measurement; Resistors; Spectral analysis; USA Councils;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference

Conference_Location

Montreal, Que.

Print_ISBN

0-7803-2475-7

Type

conf

DOI

10.1109/IEMBS.1995.575295

Filename

575295