Acoustic dipole radiation model for magnetoacoustic tomography with magnetic induction

An acoustic dipole radiation model for magnetoacoustic tomography with magnetic induction （MAT-MI） is pro- posed, 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 wave...

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Bibliographic Details
Published in:Chinese physics B 2011-08, Vol.20 (8), p.263-270
Main Authors: Li, Yi-Ling, Ma, Qing-Yu, Zhang, Dong, Xia, Rong-Min
Format: Article
Language:English
Subjects:
Acoustics
Algorithms
Dipoles
Magnetic induction
MAT
Mathematical models
Three dimensional
Tomography
Vibration
声学
振动强度
断层扫描
检测分析
磁偶极
磁感应
辐射模型
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Summary:An acoustic dipole radiation model for magnetoacoustic tomography with magnetic induction （MAT-MI） is pro- posed, 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 conductiv- ity 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.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/20/8/084302