TY - JOUR
T1 - Solving the forward problem of magnetoacoustic tomography with magnetic induction by means of the finite element method
AU - Li, Xun
AU - Li, Xu
AU - Zhu, Shanan
AU - He, Bin
PY - 2009
Y1 - 2009
N2 - Magnetoacoustic tomography with magnetic induction (MAT-MI) is a recently proposed imaging modality to image the electrical impedance of biological tissue. It combines the good contrast of electrical impedance tomography with the high spatial resolution of sonography. In this paper, a three-dimensional MAT-MI forward problem was investigated using the finite element method (FEM). The corresponding FEM formulae describing the forward problem are introduced. In the finite element analysis, magnetic induction in an object with conductivity values close to biological tissues was first carried out. The stimulating magnetic field was simulated as that generated from a three-dimensional coil. The corresponding acoustic source and field were then simulated. Computer simulation studies were conducted using both concentric and eccentric spherical conductivity models with different geometric specifications. In addition, the grid size for finite element analysis was evaluated for the model calibration and evaluation of the corresponding acoustic field.
AB - Magnetoacoustic tomography with magnetic induction (MAT-MI) is a recently proposed imaging modality to image the electrical impedance of biological tissue. It combines the good contrast of electrical impedance tomography with the high spatial resolution of sonography. In this paper, a three-dimensional MAT-MI forward problem was investigated using the finite element method (FEM). The corresponding FEM formulae describing the forward problem are introduced. In the finite element analysis, magnetic induction in an object with conductivity values close to biological tissues was first carried out. The stimulating magnetic field was simulated as that generated from a three-dimensional coil. The corresponding acoustic source and field were then simulated. Computer simulation studies were conducted using both concentric and eccentric spherical conductivity models with different geometric specifications. In addition, the grid size for finite element analysis was evaluated for the model calibration and evaluation of the corresponding acoustic field.
UR - http://www.scopus.com/inward/record.url?scp=67649892578&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67649892578&partnerID=8YFLogxK
U2 - 10.1088/0031-9155/54/9/005
DO - 10.1088/0031-9155/54/9/005
M3 - Article
C2 - 19351978
AN - SCOPUS:67649892578
SN - 0031-9155
VL - 54
SP - 2667
EP - 2682
JO - Physics in Medicine and Biology
JF - Physics in Medicine and Biology
IS - 9
ER -