3D Conductivity reconstruction of magnetoacoustic tomography with magnetic induction based on time reversal method

Xun Li, Xu Li, Shan An Zhu, Bin He

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Magnetoacoustic tomography with magnetic induction (MAT-MI) is a newly proposed imaging modality to image the electrical impedance of biological tissue, combining good contrast of electrical impedance tomography with high spatial resolution of sonography. In this paper, MAT-MI simulation was investigated with a concentric spherical conductivity model and a simulated three dimensional column coil stimulator. Transient electromagnetic analysis was carried out using the finite element method, and acoustic pressure was calculated based on the eddy current distribution resulting from electromagnetic analysis. The conductivity distribution was reconstructed from the pressure distribution on the spherical detection surface with the time reversal method. The simulation results suggested that MAT-MI could reconstruct conductivity images of biological tissue satisfactorily.

Original languageEnglish (US)
Pages (from-to)48-52+70
JournalChinese Journal of Biomedical Engineering
Volume28
Issue number1
StatePublished - Feb 1 2009

Keywords

  • Conductivity reconstruction
  • FEA
  • Magnetoacoustic tomography with magnetic induction
  • Time reversal method

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