Design of a Simple and Low Cost Electrical Impedance Tomography System using Arduino: Proteus Simulation

Abstract

Electrical Impedance Tomography (EIT) is a new imaging technique that has the ability to image human body without prolonged exposure to radiations. Developing countries like Sudan suffers from the availability of imaging devices due to its high cost and its danger to health due to the use of ionizing radiation. This problem can be solved by designing a simple and low cost radiation free medical imaging system. Wehave designed an Arduino-based EIT system for radiation free medical imaging. This system consists of AC voltage generator, Voltage Controlled Current Source,16 electrodes andan automatic electrode switching module. Control of the system is achieved by Arduinowhich decreases the overall cost of the system while adding simplicity to the design. The system results in 208 voltage measurementswhich are processed in MATLAB interfaced with EIDORS (Electrical Impedance and Diffuse Optical Tomography Reconstruction Software) to reconstruct the image. The proposed EIT system costs and performance are clearly discussed with tables and figures, it costsonly about 63.61 $, have an accuracy of 86.85% and reconstructs images with high resolution making it possible to have an alternative cheap ,accurate and simple EIT system forradiation free medical imaging.