Measurement of ocular blood flow by scanning laser ophthalmoscope video angiography．
- VernacularTitle:应用激光扫描眼底镜录像血管造影测量眼血流指标
- Author:
Jin, MAO
;
Jialiang, ZHAO
;
Ruifang, SUI
- Publication Type:Journal Article
- Keywords:
computer;
digitalization;
ocular;
blood;
flow;
Scanning;
laser;
ophthalmoscope
- From:
Chinese Journal of Experimental Ophthalmology
2001;19(1):55-58
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo establish and evaluate the methods which can quantify the ocular hemodynamics by combined scanning laser ophthalmoscopy video fluorescein angiography with computerized digital image processing system．MethodsAfter acquiring serial digital images by video capture from some angiography videotapes and measuring the gray values of some fixed areas over time in these serial images，the gray value curves and some parameters were obtained．The inter- and intra-observer reproducibility surveys were carried out．ResultsThe hemodynamic parameters were obtained，which included sectional choroidal filling time and rate，sectional papillary filling time and rate，retinal arterial and venous filling time and rate，arterovenous passing time and diameter of artery and vein．The intra- and inter-observer reproducibility were fairly good．Conclusioncomputerized digital image processing system is useful for understanding retinal and choroidal circulation．
