Acoustic Source Reconstruction of Magnetoacoustic Tomography with Magnetic Induction

Magnetoacoustic tomography with magnetic induction (MAT-MI) is a noninvasive imaging method, which has drawn much attention in imaging the conductivity of biological tissue. In the present study, we have investigated the inverse problem of MAT-MI to reconstruct the acoustic source in three-dimension model. Numerical simulation was conducted to investigate the sound source distribution and the acoustic field around the model excited by the Lorentz Force. Acoustic source was reconstructed with time reversal method, based on the acoustic signals detected at full-view range or at limited-view range. Numerical results indicate that acoustic source image can be reconstructed accurately and a stable reconstruction of boundaries should be carried out based on data collected over an angular interval that scans at least π radians.