NDLI: Preliminary Study on the Association of Vessel Diameter Variation and Glaucoma

Content Provider	IEEE Xplore Digital Library
Author	Vlachokosta, A.A. Asvestas, P.A. Matsopoulos, G.K. Uzunoglu, N. Zeyen, T.G.
Copyright Year	2007
Description	Author affiliation: Inst. of Commun. & Comput. Syst., Athens (Vlachokosta, A.A.; Asvestas, P.A.; Matsopoulos, G.K.)
Abstract	In this paper, the relation between retinal vessel diameters and glaucoma by means of advanced image processing techniques is examined. Eighteen (18) patients with ocular hypertension who converted to early glaucoma (converters) and nineteen (19) patients with ocular hypertension who remain stable (non-converters) were imaged with a fundus camera at regular intervals. The first acquired image serves as the reference image, which is compared to each follow - up image. The proposed methodology involves the extraction of vessel center/lines by means of differential calculus, the geometrical alignment (registration) of the images using the chamfer matching algorithm, the estimation of vessel diameters by fitting a Gaussian function to intensity profiles. The statistical analysis of the variations of the vessels diameters revealed a significant difference between the two populations. This difference indicates a probable association between glaucoma and variations of the vessel diameter.
Starting Page	888
Ending Page	891
File Size	363068
Page Count	4
File Format	PDF
ISBN	9781424407873
ISSN	1557170X
DOI	10.1109/IEMBS.2007.4352433
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-08-22
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image converters Hypertension Retina Optical films Retinal vessels Image processing Cameras Image resolution Pixel Monitoring
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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