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- Title
Automatic full field analysis of perfusion images gained by scanning laser Doppler flowmetry.
- Authors
Michelson, G; Welzenbach, J; Pal, I; Harazny, J
- Abstract
Scanning laser Doppler flowmetry (SLDF) enables the measurement of the laser Doppler frequency shift in retinal tissue. This process allows the quantification of retinal and optic nerve head perfusion in an area of 2.7 mm x 0.7 mm within 2 seconds and with a spatial resolution of 10 microns x 10 microns. Owing to the local heterogeneity of the retinal microcirculation itself and to heart associated pulsation the capillary retinal blood flow depends on location and time. Because of technical limitations measurements of flow are only valid in retinal points with adequate brightness and focus, and away from big vessels. To include the heart beat associated pulsation and the spatial heterogeneity of retinal blood flow into the evaluation of blood flow an algorithm was developed examining automatically the whole SLDF perfusion image.
- Publication
The British journal of ophthalmology, 1998, Vol 82, Issue 11, p1294
- ISSN
0007-1161
- Publication type
Journal Article
- DOI
10.1136/bjo.82.11.1294