High-speed Electrical Impedance Tomography (EIT) System
Being designed for general purposes, the high-speed EIT system will be used for surgical margin assessment. Aside from being designed for high-speed application, this 32-channel tetrapolar-based system can be programmed to apply either voltages or currents. Expected specifications include a bandwidth of 500 kHz, SNR of ~100dB, frame rate of ~100 frames per second, continuously selectable frequencies, and recording of total-harmonic distortion (THD) and DC values to enhance the reconstruction algorithms. These algorithms have been retooled to incorporate THD as part of a data-weighting measurement, and DC value will be used to ensure data quality during clinical acquisitions.