Magnetoacoustic Tomography With Magnetic Induction: A Rigorous Theory

Author

Ma, Qingyu ; He, Bin

Author_Institution

Minnesota Univ., Minneapolis

Volume

55

Issue

2

fYear

2008

Firstpage

813

Lastpage

816

Abstract

In this letter, we have proposed a new theory on mechanism of the magnetoacoustic (MA) signal generation with magnetic induction for an object with an arbitrary shape. An object under a static magnetic field emits acoustic signals when excited by a time-varying magnetic field, and the acoustic waveform is mainly generated at the conductivity boundaries within the object. The proposed theory on the MA tomography with magnetic induction produced highly consistent results among computational and experimental paradigms in a two-layer sample phantom and suggested the potential applications for bioimpedance imaging.

Keywords

acoustic tomography; acoustic wave production; biomedical ultrasonics; electric impedance imaging; electromagnetic induction; phantoms; acoustic waveform; arbitrary shape; bioimpedance imaging; magnetic induction; magnetoacoustic signal generation; magnetoacoustic tomography; time-varying magnetic field; two-layer sample phantom; Acoustic imaging; Acoustic waves; Bioimpedance; Conductivity; Imaging phantoms; Induction generators; Magnetic fields; Shape; Signal generators; Tomography; Electrical impedance imaging; magnetic induction; magnetoacoustic (MA) generation; tomography; Acoustics; Diagnostic Imaging; Electric Impedance; Magnetics; Models, Theoretical;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/TBME.2007.912674

Filename

4432745