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

Volume

40

Issue

2

fYear

2004

fDate

3/1/2004 12:00:00 AM

Firstpage

623

Lastpage

626

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.825424

Filename

1284491