High precision voltage source for electrical impedance tomography
US7701227B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2005 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Dec 30, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0536
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An EIT system includes a plurality of voltage sources for supplying a corresponding plurality of voltages to a corresponding number of other structures, voltage source calibration means for calibrating each voltage source, and switching means for individually connecting the calibration means to each voltage source in succession during a period when each other structure is in an inactive condition. Calibrating respective voltages and currents for each voltage source compensates for shunt impedance of each voltage source. A method for calibrating the system includes individually connecting the calibration means to each voltage source in succession during a period when each other structure is in an inactive condition for calibrating all of said voltage sources in the same way.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.