Current patterns for electrical impedance tomography
US5381333A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1991 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Jul 23, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/922
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method in electrical impedance tomography uses an adaptive repeated series of calculations and measurements to determine the best current pattern for a body having an initially unknown internal conductivity, for producing the best electrical impedance image for the body. Initially, an arbitrary current pattern and conductivity is utilized to generate a voltage pattern which is measured and compared with the theoretical voltage pattern based on the arbitrary conductivity and current patterns. When both the current pattern and the conductivity yielded by the process closely match values derived by measurements, the voltage pattern is used to produce the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.