Three-dimensional reconstruction in electrical impedance tomography.
We have developed a three-dimensional, computer-simulated, electrical impedance tomographic imaging system using the four-electrode measurement technique. The reconstruction process finds the numerical solution of Laplace's equation by using the finite element method and the Newton-Raphson algorithm. A new diagonal electrodes measurement method provides lower error than the usual neighbouring electrodes measurement method. For a three-layer, 4 x 4 model, the number of iterations increased from 3 to 16 as the number of randomly placed, high-resistivity voxels increased from 3 to 18.
Liu
W P
WP
Department of Electrical and Computer Engineering, University of Wisconsin-Madison 53706.
Hua
P
P
Webster
J G
JG
D004553:Electric Conductivity; D004566:Electrodes; D006801:Humans; D008433:Mathematics; D008953:Models, Anatomic; D008962:Models, Theoretical; D014054:Tomography / Q000379:methods*