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. Author manuscript; available in PMC: 2013 May 1.
Published in final edited form as: Physiol Meas. 2012 Apr 24;33(5):719–738. doi: 10.1088/0967-3334/33/5/719

Figure 2.

Figure 2

EIT setup for a body Ω, where I represents the current source and V represents the voltage source. (a) Closed-domain imaging – for this configuration the pair of electrodes injecting current and the pair of electrodes sensing voltages can be switched all around the boundary, resulting in a relatively uniform sensitivity that tends to diminish from the periphery towards the center of the object. (b) Open-domain imaging – in this configuration electrodes are mounted on the TRUS probe (shown in cross section) and cannot me switched around the prostate. The sensitivity is therefore relatively high on the side closed to the TREIT probe, and decreases very rapidly with distance from it.