Real-time cross-sectional and en face OCT angiography guiding high-quality scan acquisition
| Autor: | Yali Jia, David Huang, John C. Morrison, Shaohua Pi, Tristan T. Hormel, William O. Cepurna, Xiang Wei, Acner Camino |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Vignetting
medicine.diagnostic_test Computer science business.industry Image quality Graphics processing unit Image processing 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Article Refresh rate 010309 optics Optics Optical coherence tomography 0103 physical sciences Angiography medicine Computer vision Artificial intelligence 0210 nano-technology business Focus (optics) |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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