A Technical Survey on Hardware Configurations for Electrical Impedance Tomography Systems

Electrical Impedance Tomography (EIT) is an imaging technique with wide applications in medical imaging and industrial monitoring. EIT uses the boundary voltage- current data from the surface of the body under testing to reconstruct the tomography of the object. Though the technique is non-invasive and is cheaper compared to traditional imaging modalities, overall spatial resolution is much less. In this paper, we are reviewing different electrode configurations, sensing techniques and various current injecting schemes. Varied hardware setups have different impacts on the resolution of the final reconstructed image. This review will go in depth over these techniques and their effects on the reconstructed image.