Optimal experiments in electrical impedance tomography
- 1 January 1993
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Medical Imaging
- Vol. 12 (4) , 681-686
- https://doi.org/10.1109/42.251118
Abstract
Electrical impedance tomography (EIT) is a noninvasive imaging technique which aims to image the impedance within a body from electrical measurements made on the surface. The reconstruction of impedance images is a ill-posed problem which is both extremely sensitive to noise and highly computationally intensive. The authors define an experimental measurement in EIT and calculate optimal experiments which maximize the distinguishability between the region to be imaged and a best-estimate conductivity distribution. These optimal experiments can be derived from measurements made on the boundary. The analysis clarifies the properties of different voltage measurement schemes. A reconstruction algorithm based on the use of optimal experiments is derived. It is shown to be many times faster than standard Newton-based reconstruction algorithms, and results from synthetic data indicate that the images that it produces are comparable.Keywords
This publication has 8 references indexed in Scilit:
- A hybrid phantom for electrical impedance tomographyClinical Physics and Physiological Measurement, 1992
- Electrode Modelling in Electrical Impedance TomographySIAM Journal on Applied Mathematics, 1992
- Electrode models for electric current computed tomographyIEEE Transactions on Biomedical Engineering, 1989
- Data errors and reconstruction algorithms in electrical impedance tomographyClinical Physics and Physiological Measurement, 1988
- Some Mathematical Aspects of Electrical Impedance TomographyPublished by Springer Nature ,1988
- Distinguishability of Conductivities by Electric Current Computed TomographyIEEE Transactions on Medical Imaging, 1986
- Recent Developments in Applied Potential Tomography-APTPublished by Springer Nature ,1986
- Introduction to Partial Differential EquationsPublished by Walter de Gruyter GmbH ,1976