Title :
Constraints on tetrapolar tissue impedance measurements
Author :
Jones, D.M. ; Smallwood, R.H. ; Hose, D.R. ; Brown, B.H.
Author_Institution :
R. Hallamshire Hosp., Univ. of Sheffield, UK
fDate :
12/6/2001 12:00:00 AM
Abstract :
Impedance spectrum measurement using a tetrapolar surface probe provides a means of characterising biological tissue. However, parasitic capacitance and the presence of conductive fluid on the tissue surface impose an upper limit on both the frequency and impedance of measurements. The magnitude of these constraints has been evaluated by measurement and modelling
Keywords :
biological tissues; electric impedance imaging; biological tissue; conductive fluid; electrical impedance tomography; impedance spectrum measurement; parasitic capacitance; tetrapolar surface probe;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20011034
