基于声换能器特性的三维磁感应磁声成像重建算法

doi:10.3969/j.issn.0258-8021. 2014. 05.03

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Abstract Aim to apply MATMI reconstruction algorithm to general sound detection systems, the influence of acoustic transducers on MATMI image reconstruction were investigated in this paper. The acoustic intensity measurement system was used to measure the acoustic field, and then the data was used to build the acoustic transducer model by a interpolation method. The model was applied to forward and inverse problems of MATMI based on Green’s function and discretization method. In order to verify the algorithm, a simulation was carried out using sphere scan schema and cylinder scan schema. A 3D phantom model was set up based on SL model in CT, with the help of finite element analysis method and the distribution of the transient electromagnetic field and the eddy current were calculated. Simulation and reconstruction results through numerical calculation using Matlab were obtained. Results show that the algorithm can reconstruct the distribution of acoustic source vector; the correlation coefficients are 9849% and 9496%, which can be applied to the general transducer. This study provided a basis for the experimental study of MATMI and a precise reconstruction of conductivity distribution.

Key words： magnetoacoustic tomography with magnetic induction characteristics of the acoustic transducers scan schema 3D reconstruction

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	MA Ren ZHANG Shun Qi YIN Tao LIU Zhi Peng^#*

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MA Ren ZHANG Shun Qi YIN Tao LIU Zhi Peng^#*. A 3D MATMI Reconstruction Algorithm Based on Characteristics of Acoustic Transducer#br#[J]. journal1, 2014, 33(5): 532-538.

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http://cjbme.csbme.org/EN/10.3969/j.issn.0258-8021. 2014. 05.03 OR http://cjbme.csbme.org/EN/Y2014/V33/I5/532

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