1. Measurement of Absolute Blood Flow Velocity and Blood Flow in the Human Retina by Dual-beam Bidirectional Doppler Fourier-Domain Optical Coherence Tomography

    Measurement of Absolute Blood Flow Velocity and Blood Flow in the Human Retina by Dual-beam Bidirectional Doppler Fourier-Domain Optical Coherence Tomography

    Purpose The present experiments were undertaken to evaluate the validity of absolute flow velocity measurements using a dual-beam bidirectional Doppler Fourier-domain optical coherence tomography (FD-OCT) system. Methods The flow velocities of diluted milk through a glass capillary were measured at 30 different preset velocities in the range of 0.9 to 39.3 mm/s by bidirectional Doppler FD-OCT. The flow through the capillary was controlled by two infusion pumps working in different flow ranges and based on different technical principles. In vivo the validity of the method for measuring blood flow in retinal vessels was tested at bifurcations. The ...

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