Acoustic dipole radiation model for magnetoacoustic tomography with magnetic induction

doi:10.1088/1674-1056/20/8/084302

Abstract An acoustic dipole radiation model for magnetoacoustic tomography with magnetic induction (MAT-MI) is proposed, based on the analyses of one-dimensional tissue vibration, three-dimensional acoustic dipole radiation and acoustic waveform detection with a planar piston transducer. The collected waveforms provide information about the conductivity boundaries in various vibration intensities and phases due to the acoustic dipole radiation pattern. Combined with the simplified back projection algorithm, the conductivity configuration of the measured layer in terms of shape and size can be reconstructed with obvious border stripes. The numerical simulation is performed for a two-layer cylindrical phantom model and it is also verified by the experimental results of MAT-MI for a tissue-like sample phantom. The proposed model suggests a potential application of conductivity differentiation and provides a universal basis for the further study of conductivity reconstruction for MAT-MI.

Keywords: magnetoacoustic tomography with magnetic induction acoustic dipole radiation beam pattern biological tissues

Received: 22 January 2011
Revised: 18 March 2011
Accepted manuscript online:

PACS:	43.80.Ev	(Acoustical measurement methods in biological systems and media)
	72.55.+s	(Magnetoacoustic effects)
	73.50.Rb	(Acoustoelectric and magnetoacoustic effects)

Fund: Project supported by the National Basic Research Program of China (Grant No. 2011CB707900), the National Natural Science Foundation of China (Grant No. 10974098), the Natural Science Foundation of Jiangsu Province, China (Grant No. BK2009407), and the Specialized Research Fund for Doctoral Program of High Education of China (Grant No. 20093207120003).

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Li Yi-Ling(李宜令), Ma Qing-Yu(马青玉), Zhang Dong(章东), and Xia Rong-Min(夏荣民) Acoustic dipole radiation model for magnetoacoustic tomography with magnetic induction 2011 Chin. Phys. B 20 084302

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