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Doppler variance imaging for three-dimensional retina and choroid angiography

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https://doi.org/10.1117/1.3302806Creative Commons Attribution 4.0 International Public License
Abstract

We demonstrate the use of Doppler variance (standard deviation) imaging for 3-D in vivo angiography in the human eye. In addition to the regular optical Doppler tomography velocity and structural images, we use the variance of blood flow velocity to map the retina and choroid vessels. Variance imaging is subject to bulk motion artifacts as in phase-resolved Doppler imaging, and a histogram-based method is proposed for bulk-motion correction in variance imaging. Experiments were performed to demonstrate the effectiveness of the proposed method for 3-D vasculature imaging of human retina and choroid. © 2010 Society of Photo-Optical Instrumentation Engineers.

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