Current source design for MREIT technique and its experimental application

Abstract

Conductivity distribution can be imaged using Magnetic Resonance Electrical Impedance Tomography (MREIT) technique. This technique is composed of Magnetic Resonance Imaging (MRI) and Electrical Impedance Tomography (EIT) techniques and based on imaging conductor object using MRI system while applying electrical current to the conductor. In an MREIT system, current should be applied to the object in synchrony with the MR pulse sequence. In this study, a current source compatible with MRI system has been developed. The current source is designed so as to be controlled by the computer and used by an interface. The results obtained by the MREIT system, applying 20 mA current to the experimental phantom with the designed current source, are given and discussed in the study.