| Electrical Impedance Tomography |
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| CATEGORIES ABOUT ELECTRICAL IMPEDANCE TOMOGRAPHY | |
| medical imaging | |
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Proposed applications include monitoring of Lung function, detection of Cancer in the Skin and Breast and location of Epileptic Foci . All applications are currently considered experimental. In Geophysics a similar technique (called Electrical Resistivity Tomography ) is used using electrodes on the surface of the earth or in bore holes to locate resistivity anomalies, and in industrial process monitoring the arrays of electrodes are used for example to monitor mixtures of conductive fluids in vessels or pipes. The credit for the invention of EIT as a medical imaging technique is usually attributed to John G. Webster in around 1978 , although the first practical realisation of a medical EIT system was due to David C. Barber and Brian H. Brown . In geophysics the idea dates from the 1930s . Mathematically the problem of recovering the conductivity from surface measurements of current and potential is a Non-linear Inverse Problem and is severely Ill-posed . The mathematical formulation of the problem is due to Alberto Calderón , and in the mathematical literature of inverse problems it is often referred to as the "Calderón Problem". There is extensive mathematical research on the problem of uniqueness of solution and numerial algorithms for this problem. REFERENCES
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