A fast approximation for the calculation of potential distributions in electrical impedance tomography
- 1 November 1988
- journal article
- research article
- Published by IOP Publishing in Clinical Physics and Physiological Measurement
- Vol. 9 (4) , 353-361
- https://doi.org/10.1088/0143-0815/9/4/007
Abstract
A number of proposed electrical impedance tomography reconstruction algorithms rely on the assumption that the pattern of potentials produced in an unknown conductivity distribution will be similar to that produced in a uniformly conducting object of the same external dimensions. This potential distribution can be calculated from Laplace's equation. A fast approximation to the solution of Laplace's equation is formulated and tested against experimental and computer generated data. Whilst it does not fully converge to the solution, the approximation is shown to be an improvement over the assumption of semi-infinite boundary conditions and to be very much faster than conventional numerical methods.This publication has 6 references indexed in Scilit:
- A dual-frequency applied potential tomography technique: computer simulationsClinical Physics and Physiological Measurement, 1987
- A prototype system and reconstruction algorithms for electrical impedance technique in medical body imagingClinical Physics and Physiological Measurement, 1987
- Physical study of the sensitivity distribution in multi-electrode systemsClinical Physics and Physiological Measurement, 1987
- Applied potential tomographyJournal of Physics E: Scientific Instruments, 1984
- Imaging spatial distributions of resistivity—an alternative approachElectronics Letters, 1984
- Imaging spatial distributions of resistivity using applied potential tomographyElectronics Letters, 1983