Design and development of Electrical Impedance Tomography (EIT) based System

Electrical Impedance Tomography (EIT) is relatively a new imaging technique with which the images of the internal impedance of the region of interest in human body can be constructed effectively without prolonged exposure to radiations. EIT is fast, inexpensive and portable as compared to other imaging techniques. The presented work focuses on construction of human organ images acquired from impedance graph of the organ under diagnosis. In the presented work, upper arm part has been brought under EIT electrodes system network in order to get the impedance measurement using the proposed circuit. The impedance is measured by using a resistive network and tabulated in an array. The impedance array is then analyzed in MATLAB to construct the image of the particular organ. The main emphasis is given on stability of the impedance of the particular parts under different strain conditions. . General Terms Medical imaging, Electronics Product Design, Image Reconstruction Algorithm