Method for measuring the vessel diameter of optically accessible blood vessels
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United States of America Patent
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Jul 13, 2010
Grant Date -
Nov 29, 2007
app pub date -
Mar 31, 2005
filing date -
Apr 2, 2004
priority date (Note) -
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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.
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