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Acoustic dipole radiation model for magnetoacoustic tomography with magnetic induction |
| Li Yi-Ling(李宜令)a), Ma Qing-Yu(马青玉) b)†, Zhang Dong(章东)c), and Xia Rong-Min(夏荣民)d) |
| a Department of Educational Technology, Nanjing Normal University, Nanjing 210097, China; b Key Laboratory of Optoelectronics of Jiangsu Province, School of Physics and Technology, Nanjing Normal University, Nanjing 210046, China; c Institute of Acoustics, Nanjing University, Nanjing 210093, China; d University of Arkansas for Medical Science, Little Rock, AR 72205, USA |
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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.
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Received: 22 January 2011
Revised: 18 March 2011
Accepted manuscript online:
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PACS:
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43.80.Ev
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(Acoustical measurement methods in biological systems and media)
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72.55.+s
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(Magnetoacoustic effects)
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73.50.Rb
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(Acoustoelectric and magnetoacoustic effects)
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| 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). |
Cite this article:
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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