A Novel Reconstruction Method of Magnetoacoustic Tomography with Magnetic Induction Based on the Amplitude of Lorentz Force

Abstract

Magnetoacoustic tomography with magnetic induction (MAT-MI) is a recently introduced method for imaging electrical impedance properties of biological tissue, which integrates classic electrical impedance tomography and ultrasonic technique. Image reconstruction is the key problem of MAT-MI. At present, there are certain problems for the image reconstruction methods which based on the divergence of Lorentz force. In this work, a novel reconstruction method based on the amplitude of Lorentz force instead of its divergence is proposed to avoid the singularity of the divergence of Lorentz force on the interface between two kinds of medium. Meanwhile, a two dimensional complex model was built, and preliminarily numerical simulations were carried out to evaluate the proposed method. With the rhetorical analysis and computational results, the proposed straightforward method for imaging electrical impedance properties would potentially be implemented more accurately for the MAT-MI system.