Review on Biomedical Techniques for Imaging Electrical Impedance

摘要

Electrical impedance of a medium helps to predict the behavior of electrical currents in a medium. Electrical impedance refers indeed to the "difficulty", for an electrical current, to spread through the medium. While the first impedance measurements were focused on cardiovascular parameters, techniques are now being applied to the whole body, as electrical impedance present important variations through the human body and could then offer a new source of contrast.