Title :
Numerical simulation of the eddy current problem in magnetic induction tomography for biomedical applications by edge elements
Author :
Hollaus, Karl ; Magele, Christian ; Merwa, Robert ; Scharfetter, Hermann
Author_Institution :
Inst. for Fundamentals & Theor. in Electr. Eng., Graz Univ. of Technol., Austria
fDate :
3/1/2004 12:00:00 AM
Abstract :
Magnetic induction tomography of biological tissue is used for reconstructing the conductivity distribution κ=σ+jωε or changes Δκ in a human body by measuring the perturbation ΔB of an alternating magnetic field B0. The aim is to simulate the eddy current problem in magnetic induction tomography for biomedical applications by symmetric tetrahedral edge finite elements of second order. The method is validated by measurement data from a representative experiment, and numerical results of an edema in a human head are presented.
Keywords :
biomedical equipment; eddy currents; electric impedance imaging; electromagnetic induction; tomography; alternating magnetic field; biological tissue; biomedical applications; conductivity reconstruction; eddy current; human body; human head; magnetic induction tomography; numerical simulation; perturbation measurement; second order finite elements; sensitivity; symmetric tetrahedral edge elements; Anthropometry; Biological system modeling; Biological tissues; Biomedical measurements; Conductivity measurement; Eddy currents; Humans; Magnetic field measurement; Numerical simulation; Tomography;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.825424
