基于真实乳腺模型的感应式磁声成像正问题

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Abstract Magnetoacoustic tomography with magnetic induction (MAT-MI) is a new type of multi-physical, functional imaging modality, which combines the electrical impedance tomography with the sonography. Due to the complex structure, the MAT-MI imaging problems based on real model is of scientific and clinical significance. Wherein, the forward solver is the foundation of MAT-MI imaging. This paper addressed the problem for the modeling and forward solution of MAT-MI. The principle of coupling problem in MAT-MI was analyzed, and the real model of breast was reconstructed. Using generalized finite element method (GFEM), the forward problems of electromagnetic field and acoustic field were solved based on the real model of breast. The distributions of the acoustic source and acoustic pressure were obtained. The results show that in the real model, the distributions of the eddy current density and the acoustic source, as well as the profile of the acoustic pressure, changed remarkably, compared with the ideal two-layer concentric spheres model. It is suggested that the effects of the real model should be taken into account for image reconstruction in clinical application. Thanks to the high accuracy, the calculation method in this paper is applicable to solve the forward problem of MAT-MI.

Key words： Magnetoacoustic tomography with magnetic induction, real model of breast, forward problem, eddy current distribution, generalized finite element method

Received: 13 April 2016 Published: 03 January 2017

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TM12

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	Zhang Shuai
	Hou Wanjiao
	Zhang Xueying
	Yang Hongshuang
	Xu Guizhi

Cite this article:

Zhang Shuai,Hou Wanjiao,Zhang Xueying等. Forward Problem in Magnetoacoustic Tomography with Magnetic Induction Based on Real Model of Breast[J]. Transactions of China Electrotechnical Society, 2016, 31(24): 126-133.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I24/126

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