The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 11, 2014
Filed:
Sep. 15, 2010
Takaaki Saitou, Kanagawa, JP;
Yasuhiro Minetoma, Kanagawa, JP;
Minkyung Chun, Kanagawa, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
Illumination light projected into a body cavity includes first to third narrowband rays of different wavelength ranges, at least one of these narrowband rays has a central wavelength of not more than 450 nm. Under these narrowband rays, first to third narrowband image signals are respectively obtained through an endoscope. Based on the first to third narrowband image signals, vascular areas containing blood vessels are determined, and a first luminance ratio between the first and third narrowband signals and a second luminance ratio between the second and third narrowband signals are calculated at every pixel of the vascular areas. From the calculated first and second luminance ratios, information about both the depth and oxygen saturation of the blood vessels is acquired with reference to correlation data that correlates the first and second luminance ratios to the vessel depth and the oxygen saturation.