Real-time cross-sectional and en face OCT angiography guiding high-quality scan acquisition

Defocusing, vignetting, and bulk motion degrade the image quality of optical coherence tomography angiography (OCTA) more significantly than structural OCT. The assessment of focus, alignment conditions, and stability of imaging subjects in commercially available OCTA systems are currently based on...

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Bibliographic Details
Published inOptics letters Vol. 44; no. 6; p. 1431
Main Authors Wei, Xiang, Camino, Acner, Pi, Shaohua, Hormel, Tristan T, Cepurna, William, Huang, David, Morrison, John C, Jia, Yali
Format Journal Article
LanguageEnglish
Published United States 15.03.2019
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Summary:Defocusing, vignetting, and bulk motion degrade the image quality of optical coherence tomography angiography (OCTA) more significantly than structural OCT. The assessment of focus, alignment conditions, and stability of imaging subjects in commercially available OCTA systems are currently based on OCT signal quality alone, without knowledge of OCTA signal quality. This results in low yield rates for further quantification. In this Letter, we developed a novel OCTA platform based on a graphics processing unit (GPU) for a real-time, high refresh rate, B-san-by-B-scan split-spectrum amplitude-decorrelation angiography. The GPU provides a real-time display of both cross-sectional and en face images to assist operators during scan acquisition and ensure OCTA scan quality.
ISSN:1539-4794
DOI:10.1364/OL.44.001431