eprintid: 2366 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/00/23/66 datestamp: 2023-11-09 15:50:35 lastmod: 2023-11-09 15:50:35 status_changed: 2023-11-09 15:42:36 type: article metadata_visibility: show creators_name: Ahmad Fadzil, M.H. creators_name: Lila Iznita, I. creators_name: Adi Nugroho, H. title: Area analysis of foveal avascular zone in diabetic retinopathy colour fundus images ispublished: pub keywords: article; diabetic retinopathy; eye fundus; human; mathematical computing; retina blood vessel; retina fluorescein angiography; retina fovea note: cited By 4 abstract: An enlargement of foveal avascular zone (FAZ) is usually found in eyes with diabetic retinopathy (DR). Currently, it is difficult to discern the FAZ area and to measure its enlargement in an objective manner using on colour fundus. A new automated approach for area analysis of FAZ using colour fundus images has been developed. Here, a binary map of retinal vasculature is computer generated from the colour fundus image and is then used to determine vessel ends and pathologies surrounding FAZ for area analysis. The performance of the developed method is compared to a manually-segmented FAZ from normal colour fundus image. The proposed method is found to achieve accuracies from 69.1 to 99.8 compared to accuracies of 16.6 to 98.9 for normal colour fundus images. The proposed method is more consistent with mean accuracy improvement of 16.1. The standard deviation achieved by the proposed method is also smaller by a factor of 2.8. The developed algorithm is thus more reliable. Copyright © 2011 Inderscience Enterprises Ltd. date: 2011 publisher: Inderscience Publishers official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952845116&doi=10.1504%2fIJMEI.2011.039079&partnerID=40&md5=4dd76852e586d31f8300360ba5887531 id_number: 10.1504/IJMEI.2011.039079 full_text_status: none publication: International Journal of Medical Engineering and Informatics volume: 3 number: 1 pagerange: 84-98 refereed: TRUE issn: 17550653 citation: Ahmad Fadzil, M.H. and Lila Iznita, I. and Adi Nugroho, H. (2011) Area analysis of foveal avascular zone in diabetic retinopathy colour fundus images. International Journal of Medical Engineering and Informatics, 3 (1). pp. 84-98. ISSN 17550653