Electrical Impedance Tomography Induced Current

The ultimate goal of induced‐current electrical impedance tomography (ICEIT) is to image the electrical impedance distribution within the human body. In ICEIT, time‐varying magnetic fields are applied to induce currents in the body and surface voltage measurements are used to reconstruct impedance distribution. Time‐varying fields are usually generated by sinusoidal current‐carrying wires encircling the conducting body. Given the conductivity distribution, calculating the surface voltages due a given coil configuration is named as the forward problem of ICEIT. Reconstructing the unknown impedance distribution from the surface voltage measurements is the inverse problem. This article introduces the basic theory and numerical studies related to the forward and inverse problem of ICEIT. Basic properties of a possible data acquisition system are discussed. Images reconstructed using a 16‐electrode, 6‐coil data acquisition system are presented.
Citation Formats
N. G. Gençer, Electrical Impedance Tomography Induced Current. 2006.