The result of EIT validation experiment in realistic head phantom.

<p>The right shows spatial resolutions as a function of spatial location within the phantom. Position E and F (the two positions at 3 and 9 o'clock close to boundary) shows the best spatial resolution among the six positions. The left shows images intensity of the agar cylinders versus their known impedance at the six pre-defined positions. It can be seen that the intensity of EIT images for the agar cylinder is linearly related with its known impedance. The different slope for each spatial position indicates spatially-dependent system sensitivity.