Diseño e implementación de un sistema de tomografía de impedancia eléctrica pulmonar

This paper presents the development and implementation of a DSP-based electrical impedance tomography (EIT) system for real time lung imaging. The protoype design is focused on the acquisition and signal conditioning hardware, the DSP implementation of a phase sensitive demodulator (PSD) for real time measurement of the real component of the detected voltages and the development of a graphical user interface based on EIDORS reconstruction software for image inversion. Tests with a circular tank and a healthy patient were carried out, presenting in both cases positive results.