Method for measuring the vessel diameter of optically accessible blood vessels
US7756569B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2005 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Jul 13, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/02007
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
It is the object of a method for measuring the vessel diameter of optically accessible blood vessels to measure vessel diameters of optically accessible blood vessels in a simple manner based on digital images and with high accuracy even when the vessel diameter is on an order of magnitude at which the determination of the diameter by image point counting is associated with an unacceptably high error. According to the invention, the vessel diameter is determined photometrically from the logarithmized ratio of the intensities of the reflection of the vessel-free environment of the blood vessel and of the reflection of the blood vessel, which intensities are determined in a first monochromatic image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.