Preliminary study on the association of vessel diameter variation and glaucoma

dc.contributor.author	Βλαχοκώστα, Αλεξάνδρα Α.	el
dc.contributor.author	Ασβεστάς, Παντελής Α.	el
dc.contributor.author	Ματσόπουλος, Γεώργιος Κ.	el
dc.contributor.author	Ουζούνογλου, Νικόλαος Κ.	el
dc.contributor.author	Zeyen, T.G.	en
dc.date.accessioned	2015-02-08T10:33:35Z
dc.date.available	2015-02-08T10:33:35Z
dc.date.issued	2015-02-08
dc.identifier.uri	http://hdl.handle.net/11400/5840
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://ieeexplore.ieee.org/	en
dc.subject	Biomedical optical imaging
dc.subject	Diameter measurement
dc.subject	Βιοϊατρική οπτική απεικόνιση
dc.subject	Μέτρηση διαμέτρου
dc.title	Preliminary study on the association of vessel diameter variation and glaucoma	en
heal.type	conferenceItem
heal.generalDescription	Conference proceedings of the 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society	en
heal.classification	Medicine
heal.classification	Ophthalmology
heal.classification	Ιατρική
heal.classification	Οφθαλμολογία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85095071
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	N/A-Οφθαλμολογία
heal.identifier.secondary	DOI: 10.1109/IEMBS.2007.4352433
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2007
heal.bibliographicCitation	Vlachokosta, A., Asvestas, P., Matsopoulos, G., Uzunoglu, N. and Zeyen, T. 92007). Preliminary study on the association of vessel diameter variation and glaucoma. In the 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Lyon, 22nd -26th Aug 2007. pp. 888-891. IEEE. Available from: http://ieeexplore.ieee.org	en
heal.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.	en
heal.publisher	IEEE	en
heal.fullTextAvailability	true
heal.conferenceName	Annual International Conference of the IEEE Engineering in Medicine and Biology Society	en
heal.conferenceItemType	full paper