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Full range complex ultrahigh sensitive optical microangiography.

This Letter presents a useful method that combines the full range complex Fourier domain optical coherence tomography (OCT) with the ultrahigh sensitive optical microangiography (OMAG) to achieve full range complex imaging of blood flow within microcirculatory tissue beds in vivo. We propose to use the fast scanning axis to realize the full range complex imaging, while using the slow axis to achieve OMAG imaging of blood flow. We demonstrate the proposed method by using a high speed 1310 nm OCT/OMAG system running at 92 kHz line scan rate to image the flow phantoms in vitro, and the blood flows in tissue beds in vivo.