Electrical impedance tomography for high speed chest imaging

Electrical Impedance Tomography (EIT) is a method for imaging the internal conductivity distribution od a cross section of the human body using known injected currents and measured potentials on the surface. The problem of recovering the internal conductivity from this data is extremely ill-conditioned and, by contrast to many other medical imaging techniques, non-linear. Inevitably EIT images will be low in spatial resolution but the technique promises high temporal resolution, continuous monitoring, relatively low cost and the possibility that soft tissue changes may be imaged which are invisible to other imaging techniques.