Bioelectrical spectroscopy from multi-frequency EIT.
A method is described by which bioelectrical spectroscopy could be combined with multi-frequency electrical impedance tomography (EIT) enabling a Cole-Cole plot to be drawn for any selected pixel in the image for tissue characterization. To demonstrate the principles of the method, multi-frequency EIT measurements were simulated with a numerical model. As an example, porcine myocardium, immersed in an electrolytic tank, was simulated for a frequency range of 20 kHz to 2 MHz. The method could have an important application in transplant surgery for screening organs for viability prior to transplant.
Griffiths
H
H
INSERM U281, Lyon, France.
Jossinet
J
J
D000818:Animals; D017097:Electric Impedance; D004566:Electrodes; D006321:Heart / Q000502:physiology; D007091:Image Processing, Computer-Assisted; D008954:Models, Biological; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013552:Swine; D014054:Tomography / Q000295:instrumentation*