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Proceedings Paper

Measurements of retinal blood vessel diameter for biospeckle flowmetry
Author(s): Yoshihisa Aizu; Toshimitsu Asakura
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Paper Abstract

A method is described for measuring the retinal vessel diameter in bio-speckle flowmetry. Knowledge of the vessel diameter is required not only to calibrate the correlation time in velocity in the bio-speckle method, but also to evaluate a blood flow-volume rate. One-dimensional fundus reflectance patterns are detected across the retinal vessel by using a linear image sensor on the basis of spectral reflectance properties, and are used to determine the vessel diameter by using a signal processing. A total apparatus was constructed to measure simultaneously the vessel diameter and the correlation time and, thus, the flow velocity and the flow volume rate. The usefulness of the method was verified by in vivo experiments.

Paper Details

Date Published: 19 June 1998
PDF: 10 pages
Proc. SPIE 3252, Optical Diagnostics of Biological Fluids III, (19 June 1998); doi: 10.1117/12.311896
Show Author Affiliations
Yoshihisa Aizu, Muroran Institute of Technology (Japan)
Toshimitsu Asakura, Hokkai-Gakuen Univ. (Japan)

Published in SPIE Proceedings Vol. 3252:
Optical Diagnostics of Biological Fluids III
Alexander V. Priezzhev; Toshimitsu Asakura; J. David Briers, Editor(s)

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