Abstract

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Title:: Effects of tissue conductivity properties on acoustic source intensity for magnetoacoustic tomography with magnetic induction

Author(s):: WANG Shigang1; HE Lemin1; YOU Minjuan2; MA Ren3; LIU Zhipeng3; 1. Department of Radiology, Shandong First Medical University (Shandong Academy of Medical Sciences), Taian 271016, China 2. Shandong Medicine Technician College, Taian 271016, China 3. Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China

Keywords:: conductivity anisotropy magnetoacoustic tomography with magnetic induction acoustic source

Abstract:: In view of the fact that the conductivities of some biological tissues are anisotropic, the characteristics of acoustic source intensity for magnetoacoustic tomography with magnetic induction are theoretically analyzed, and the formula of acoustic source intensity with different conductivity properties is deduced. A biological tissue conductivity model is established using COMSOL Multiphysics5.5 for electromagnetic field simulation analysis, and the vibration acoustic source is calculated using Matlab 2016a. The results show that both the acoustic sources with isotropic and anisotropic conductivities can reflect the tomographic structure of biological tissues under the same magnetic field excitation conditions, but the acoustic source intensities are different. This study provides a theoretical basis for the accurate acoustic source reconstruction for magnetoacoustic tomography with magnetic induction.