Characterization of moving objects in a stationary background
US7912534B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2004 |
| Grant date | Mar 22, 2011 |
| Priority date | — |
| Expiry date | Jul 29, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1459
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and system for determination and mapping the quantity of chromophores having a distinct spectrum attached to moving objects in an spectrally rich environment that may include multiple chromophores attached to stationary objects. Au area of interest is imaged at different times and different wavelengths, and the spectral properties of the chromophores attached to the moving objects are separated from the stationary spectral properties of the background, followed by spectral analysis of the moving objects to determine their quantity. Application to the retinal vasculature is illustrated, showing the imaging, analyzing and quantifying of the oxygen saturation of retinal blood, resolved for the different vascular compartments, including capillaries, arterioles, venules, arteries, and veins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.