Wide field OCT angiography by using swept source OCT in living human eye

Qinqin Zhang; Chieh-Li Chen; Zhongdi Chu; Ruikang K. Wang

doi:10.1117/12.2251029

8 February 2017 Wide field OCT angiography by using swept source OCT in living human eye

Qinqin Zhang, Chieh-Li Chen, Zhongdi Chu, Ruikang K. Wang

Proceedings Volume 10045, Ophthalmic Technologies XXVII; 100450V (2017) https://doi.org/10.1117/12.2251029
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

To investigate the application of wide field OCT angiography (OCTA) in living human eye. Normal and pathologic eyes were recruited and imaged by a 1060 nm swept source OCTA system with A-line speed of 100 kHz provided by Carl Zeiss Meditec. Inc.. Wide field OCTA images were generated in a single scan within 5 seconds based on the tracking capability installed in the system with 9 x 9 mm² and 12 x 12 mm² field of view and sampled by 500 A-lines x 500 Bframes with 2 repetitions in the same location for one 3D data. Complex optical microangiography (OMAG) algorithm was used to extract the blood flow information. The en face maximum projection provided by the device was used to generate 2-dimensional angiograms of different layers and color-code images. Wide field en face OCTA images of different macular diseases showed a great agreement with fluorescein angiography (FA). Meanwhile, OCTA provides depth-resolved information and detailed vascular images of venous occlusion and DR patients in far peripheral region, and choroidal vessels imaging in serpiginous choroidopathy patient, providing a better visualization of vascular network compared to FA.

Conference Presentation

Citation Download Citation

Qinqin Zhang, Chieh-Li Chen, Zhongdi Chu, and Ruikang K. Wang "Wide field OCT angiography by using swept source OCT in living human eye", Proc. SPIE 10045, Ophthalmic Technologies XXVII, 100450V (8 February 2017); https://doi.org/10.1117/12.2251029

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