Please use this identifier to cite or link to this item: https://doi.org/10.3109/09286586.2012.702258
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dc.titleCorrelation and reproducibility of retinal vascular geometric measurements for stereoscopic retinal images of the same eyes
dc.contributor.authorSasongko, M.B.
dc.contributor.authorHodgson, L.A.B.
dc.contributor.authorWong, T.Y.
dc.contributor.authorKawasaki, R.
dc.contributor.authorCheung, C.Y.
dc.contributor.authorHsu, W.
dc.contributor.authorLi Lee, M.
dc.contributor.authorLau, P.Q.F.
dc.contributor.authorMitchell, P.
dc.contributor.authorWang, J.J.
dc.date.accessioned2013-07-23T09:24:33Z
dc.date.available2013-07-23T09:24:33Z
dc.date.issued2012
dc.identifier.citationSasongko, M.B., Hodgson, L.A.B., Wong, T.Y., Kawasaki, R., Cheung, C.Y., Hsu, W., Li Lee, M., Lau, P.Q.F., Mitchell, P., Wang, J.J. (2012). Correlation and reproducibility of retinal vascular geometric measurements for stereoscopic retinal images of the same eyes. Ophthalmic Epidemiology 19 (5) : 322-327. ScholarBank@NUS Repository. https://doi.org/10.3109/09286586.2012.702258
dc.identifier.issn09286586
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/43085
dc.description.abstractPurpose: To assess the correlation and reproducibility of retinal vascular geometric measurements obtained from two stereo-paired fundus images. Methods: Thirty stereoscopic pairs of color optic disc-centered photographs from the Blue Mountains Eye Study were analyzed. Side-by-side grading was performed by a single grader, using semi-automated computer software to quantify the following retinal geometric parameters: (1) retinal arteriolar/venular caliber (CRAE/CRVE); (2) arteriole-to-venule ratio (AVR); (3) branching angle; and (4) tortuosity. We used Pearson correlation (r), intra-class correlation coefficient (ICC), and Bland-Altman plots to assess within-pair correlation and reproducibility for each parameter measured. Results: Inter- and intra-grader r and ICC were high (all r > 0.90 and ICC > 0.90), except for branching angle (ICCs between 0.690.83). There was no significant difference between within-pair means of all retinal vascular geometric parameters, before and after excluding poor quality images. CRAE, CRVE, AVR, and arteriolar and venular tortuosity showed very high within-pair correlation and agreement (all r > 0.80 and all ICC > 0.90 respectively). Arteriolar and venular branching angles demonstrated moderate within-pair correlation (r = 0.65 and r = 0.62, respectively) and within-pair agreement (ICC = 0.76 and ICC = 0.77, respectively). Conclusions: Use of computer-assisted software to measure retinal vascular geometric parameters from paired fundus images was highly repeatable and is robust to differences in photographic angles of paired stereo images. Such measurements can be applied to evaluate temporal changes in longitudinal studies. © 2012 Informa Healthcare USA, Inc.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.3109/09286586.2012.702258
dc.sourceScopus
dc.subjectCorrelation
dc.subjectReproducibility
dc.subjectRetina
dc.subjectRetinal imaging
dc.subjectRetinal vascular geometry
dc.subjectStereoscopic
dc.typeArticle
dc.contributor.departmentCOMPUTER SCIENCE
dc.contributor.departmentOPHTHALMOLOGY
dc.contributor.departmentDUKE-NUS GRADUATE MEDICAL SCHOOL S'PORE
dc.description.doi10.3109/09286586.2012.702258
dc.description.sourcetitleOphthalmic Epidemiology
dc.description.volume19
dc.description.issue5
dc.description.page322-327
dc.description.codenOPEPF
dc.identifier.isiut000308951500011
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