An algorithm and simulation of the inverse problem of a low-frequency current field [in electrical impedance imaging]

Author

Liu, Yin ; Gong, Lian ; Liu, Ping ; Zhang, Keqian

Author_Institution

Beijing Coll. of Power Eng., China

Volume

26

Issue

2

fYear

1990

fDate

3/1/1990 12:00:00 AM

Firstpage

630

Lastpage

633

Abstract

A novel algorithm is obtained for solving the inverse problem of the low-frequency current field. This algorithm is obtained by using the theory of the generalized incremental linear function combined with the finite-element method. Using this approach, conductivity variations in the depth region can be found. The convergence is achieved quickly. A variety of regions in which conductivities vary in different patterns were calculated by computer simulation and phantom experiment

Keywords

bioelectric phenomena; computerised tomography; electric fields; electrical engineering computing; finite element analysis; inverse problems; medical diagnostic computing; algorithm; computer simulation; conductivity variations; depth region; electrical impedance imaging; finite-element method; generalized incremental linear function; inverse problem; low-frequency current field; phantom experiment; Boundary conditions; Conductivity; Current; Educational institutions; Finite element methods; Gas insulated transmission lines; Inverse problems; Jacobian matrices; Medical diagnosis; Medical simulation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.106396

Filename

106396