The Scanning Data Collection Strategy for Enhancing the Quality of Electrical Impedance Tomography

This paper addresses a scanning data collection strategy in electrical impedance tomography (EIT) to enhance the quality of an impedance image by expanding the electrode number. This scanning EIT (SEIT) system rotates the electrode pairs at a small angle, and then, the measurement electrodes can scan around the circumference of a phantom tank. The numerical simulations examine the reconstructed result by using a cylindrical model with two conductivity varieties. The experimental results illustrate the reconstruction images with and without the SEIT from 2-D real measurement data. Compared with conventional EIT images, the images reconstructed from the scanning data collection strategy exhibit high resolution and are clearer. This paper provides a feasible configuration to reduce the noise and improve the resolution of the impedance image.