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Phantom fabrication and preparation procedure, from left to right: human retinal vasculature fundus image, two-dimensional (2-D) segmented vascular map14 (© 2012 OSA. Reprinted with permission from the Optical Society of America), three-dimensional (3-D)-printed vascular phantom with hemoglobin (Hb)-filled channel, and hyperspectral reflectance imaging (HRI) result processed to estimate oxyhemoglobin () concentration.
