What EIT measures and how it is modelled: the physics that leads to the conductivity equation, and the models of the electrodes through which current enters and voltages are read.
Reading order.
- Electrical Impedance Tomography, with its place among Tomographic Imaging Modalities and its Applications of EIT.
- The physics: Ohm’s Law in Continuum Form, Continuity Equation and the Quasi-Static Approximation lead to the Conductivity Equation; Complex Conductivity covers alternating currents.
- The electrodes: Electrode Models compares the continuum, point, gap, shunt and complete electrode models.
- The experiment: Measurement Protocols and Current Patterns.
Next. The mathematics of the resulting boundary value problems is in The Forward Problem; their discretisation in Finite Elements.
References
- M. Cheney, D. Isaacson, J. C. Newell (1999). Electrical Impedance Tomography. SIAM Rev. 41(1), 85–101. doi:10.1137/S0036144598333613
- A. Adler, D. Holder (eds.) (2021). Electrical Impedance Tomography: Methods, History and Applications, 2nd ed. CRC Press. doi:10.1201/9780429399886