High quality optical microangiography of ocular microcirculation and measurement of total retinal blood flow in mouse eye

Zhongwei Zhi; Xin Yin; Suzan Dziennis; Charles E. Alpers; Ruikang K. Wang

doi:10.1117/12.2005222

26 March 2013 High quality optical microangiography of ocular microcirculation and measurement of total retinal blood flow in mouse eye

Zhongwei Zhi, Xin Yin, Suzan Dziennis, Charles E. Alpers, Ruikang K. Wang

Author Affiliations +

Proceedings Volume 8567, Ophthalmic Technologies XXIII; 856728 (2013) https://doi.org/10.1117/12.2005222
Event: SPIE BiOS, 2013, San Francisco, California, United States

Abstract

Visualization and measurement of retinal blood flow (RBF) is important to the diagnosis and management of different eye diseases, including diabetic retinopathy. Optical microangiography (OMAG) is developed for generating 3D dynamic microcirculation image and later refined into ultra-high sensitive OMAG (UHS-OMAG) for true capillary vessels imaging. Here, we present the application of OMAG imaging technique for visualization of depth-resolved vascular network within retina and choroid as well as measurement of total retinal blood flow in mice. A fast speed spectral domain OCT imaging system at 820nm with a line scan rate of 140 kHz was developed to image mouse posterior eye. By applying UHS-OMAG scanning protocol and processing algorithm, we achieved true capillary level imaging of retina and choroid vasculature in mouse eye. The vascular pattern within different retinal layers and choroid was presented. An en face Doppler OCT approach [1] without knowing Doppler angle was adopted for the measurement of total retinal blood flow. The axial blood flow velocity is measured in an en face plane by raster scanning and the flow is calculated by integrating over the vessel area of the central retinal artery.

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Zhongwei Zhi, Xin Yin, Suzan Dziennis, Charles E. Alpers, and Ruikang K. Wang "High quality optical microangiography of ocular microcirculation and measurement of total retinal blood flow in mouse eye", Proc. SPIE 8567, Ophthalmic Technologies XXIII, 856728 (26 March 2013); https://doi.org/10.1117/12.2005222

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KEYWORDS

Blood circulation

Optical coherence tomography

Eye

Retina

Arteries

Doppler effect

Optic nerve

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