Abstract
Magnetoacoustic Tomography with Magnetic Induction (MAT-MI) is a hybrid magnetic modality aiming to reconstruct the electrical impedance property in biological tissue by integrating magnetic induction and ultrasound measurements with high resolution. Most of the existing computation algorithms for MAT-MI are based on the assumption that the tissue has homogeneous acoustic properties. However, the acoustic properties of the tissue in most parts of human body are heterogeneous. In the present study, we propose a new method to solve the forward problem of MAT-MI based on Generalized Finite Element Method (GFEM) which the acoustic inhomogeneity of the media is taken into account. We built a model of acoustic inhomogeneous and solved the distribution of the eddy current, calculated the acoustic source, and computed the acoustic pressure signal.
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