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13 March 2024 Advanced image registration in ophthalmic phase-sensitive optical coherence tomography angiography
Tianhui Jie, Sebastián Ruiz-Lopera, Brett E. Bouma, Néstor Uribe-Patarroyo
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Proceedings Volume PC12830, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVIII; PC128300K (2024) https://doi.org/10.1117/12.3003767
Event: SPIE BiOS, 2024, San Francisco, California, United States
Abstract
For OCTA to become a widespread tool in the ophthalmic clinic, the significant increase in acquisition time must be kept at a minimum. Therefore, we developed a new OCTA processing pipeline that enables 4D coherent averaging and leverages from it to improve angiography contrast without using more repetitions. We first present a new metric for computing angiography contrast that exploits both spatial and time coherence, g1C, which significantly reduce phase noise while using minimal repetitions for averaging. We then show, for the first time, how to perform advanced image registration to correct for motion between repetitions while maintaining phase coherency.
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Tianhui Jie, Sebastián Ruiz-Lopera, Brett E. Bouma, and Néstor Uribe-Patarroyo "Advanced image registration in ophthalmic phase-sensitive optical coherence tomography angiography", Proc. SPIE PC12830, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVIII, PC128300K (13 March 2024); https://doi.org/10.1117/12.3003767
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KEYWORDS
Angiography
Image registration
Optical coherence tomography
Image processing
Computer hardware
Optical coherence
Tomography
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