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Proceedings Paper

Extraction Of Blood Flow Characteristics From Choroidal Angiography
Author(s): G. J. Klein; R. W. Flower; R. H. Baumgartner
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Paper Abstract

Indocyanine green dye angiography has made possible visualization of choroidal blood flow in the human eye; however, to date, its clinical utility has been limited. The complex, multilayered, vascular structure of the choroid and an overlying layer of densely pigmented tissue combine to produce angiographic images of low contrast that are difficult to interpret. Conventional image processing can enhance individual images of the blood vessels, but such an approach contributes no information about the dynamics of blood flow through them. In this paper, an image-processing approach will be discussed that focuses on the dynamic information present in an angiographic sequence. Related topics such as high-speed digital acquisition and low-light-level ophthalmic imaging will also be discussed.

Paper Details

Date Published: 22 December 1989
PDF: 10 pages
Proc. SPIE 1161, New Methods in Microscopy and Low Light Imaging, (22 December 1989); doi: 10.1117/12.962722
Show Author Affiliations
G. J. Klein, The Johns Hopkins University Applied Physics Laboratory (United States)
R. W. Flower, The Johns Hopkins University Applied Physics Laboratory Wilmer Ophthalmological Insitute (United States)
R. H. Baumgartner, Wilmer Ophthalmological Insitute and The St. Gallen Eye Clinic (United States)


Published in SPIE Proceedings Vol. 1161:
New Methods in Microscopy and Low Light Imaging
John E. Wampler, Editor(s)

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