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Manual measurement of retinal bifurcation features

By Bashir Al-Diri, Andrew Hunter, D. Steel and M. Habib


This paper introduces a new computerized tool for\ud accurate manual measurement of features of retinal bifurcation\ud geometry, designed for use in investigating correlations between measurement features and clinical conditions. The tool uses user-placed rectangles to measure the vessel width, and lines placed along vessel center lines to measure the angles. An\ud analysis is presented of measurements taken from 435 bifurcations.\ud These are compared with theoretical predictions based on\ud optimality principles presented in the literature. The new tool shows better agreement with the theoretical predictions than a simpler manual method published in the literature, but there remains a significant discrepancy between current theory and measured geometry

Topics: G400 Computer Science
Publisher: IEEE Engineering in Medicine and Biology Society
Year: 2010
OAI identifier:

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