Title :
Magnetoacoustic Tomography With Magnetic Induction: A Rigorous Theory
Author :
Ma, Qingyu ; He, Bin
Author_Institution :
Minnesota Univ., Minneapolis
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;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.2007.912674
