Title :
Bipolar and tetrapolar transfer impedance measurements from volume conductor
Author :
Brown, B.H. ; Wilson, A.J. ; Bertemes-Filho, P.
Author_Institution :
Dept. of Med. Phys., R. Hallamshire Hospital, Sheffield, UK
fDate :
12/7/2000 12:00:00 AM
Abstract :
Bipolar and tetrapolar impedance measurements from a volume of biological tissue are compared. In the bipolar case, sensitivity is always positive and decreases with depth. However, for tetrapolar measurements the mean sensitivity is found to be zero over the surface plane, rising to a maximum at a depth proportional to electrode spacing
Keywords :
biomedical measurement; electric impedance measurement; sensitivity analysis; biological tissue; bipolar transfer impedance measurements; electrode spacing; mean sensitivity; tetrapolar transfer impedance measurements; volume conductor;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20001439
