Fast and robust standard-deviation-based method for bulk motion compensation in phase-based functional OCT
| Autor: | William O. Cepurna, Shaohua Pi, Xiang Wei, Acner Camino, Yali Jia, John C. Morrison, David Huang |
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| Rok vydání: | 2018 |
| Předmět: |
genetic structures
Image quality Phase (waves) Compensation methods 01 natural sciences Standard deviation Article Compensation (engineering) 010309 optics 03 medical and health sciences symbols.namesake 0302 clinical medicine Optics Optical coherence tomography 0103 physical sciences medicine Laser-Doppler Flowmetry Animals Humans Fluorescein Angiography Physics medicine.diagnostic_test Fourier Analysis business.industry Retinal Vessels Laser Doppler velocimetry Atomic and Molecular Physics and Optics eye diseases Healthy Volunteers Rats Fourier analysis Regional Blood Flow 030221 ophthalmology & optometry symbols sense organs business Algorithms Blood Flow Velocity Tomography Optical Coherence |
| Zdroj: | Optics letters. 43(9) |
| ISSN: | 1539-4794 |
| Popis: | Phase-based optical coherence tomography (OCT), such as OCT angiography (OCTA) and Doppler OCT, is sensitive to the confounding phase shift introduced by subject bulk motion. Traditional bulk motion compensation methods are limited by their accuracy and computing cost-effectiveness. In this Letter, to the best of our knowledge, we present a novel bulk motion compensation method for phase-based functional OCT. Bulk motion associated phase shift can be directly derived by solving its equation using a standard deviation of phase-based OCTA and Doppler OCT flow signals. This method was evaluated on rodent retinal images acquired by a prototype visible light OCT and human retinal images acquired by a commercial system. The image quality and computational speed were significantly improved, compared to two conventional phase compensation methods. |
| Databáze: | OpenAIRE |
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