Title :
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
fDate :
3/1/1990 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
