Simulation Research of Limited-View Magnetoacoustic Tomography With Magnetic Induction Methods

Magnetoacoustic Tomography with Magnetic Induction (MAT-MI) is a new imaging modality that combines magnetic induction imaging technology and ultrasound tomography imaging technology. The existing research on MAT-MI build up the image reconstruction mostly based on the full-angle ultrasound scan data. So in the absence of complete data, the reconstruction process may introduce the large errors and generate image artifacts. In this paper, the limited view MAT-MI reconstruction method is proposed.Taking the acoustic uniform concentric sphere models with different radius as the research objects,we simulated the distribution of eddy current, sound source and sound pressure in the sample reestablished the limited-view sound source by using the fast splitting Bregman method, and finally reconstructed the conductivity distribution. The results showed that the proposed imaging method can accurately reconstruct the sound source and conductivity distribution in the acoustic medium with limited viewing angle. The research will help to promote the clinical application of MAT-MI, which has great scientific significance and actual application value.