Table of Contents
Appl. Sci., Volume 7, Issue 7 (July 2017)
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Cover Story An overlay between Doppler Optical Coherence Tomography (Doppler OCT, color scale) and Optical [...] Read more. An overlay between Doppler Optical Coherence Tomography (Doppler OCT, color scale) and Optical Coherence Tomography Angiography (OCTA, grayscale) of mouse brain microvasculature is shown. Doppler OCT visualizes blood flow based on the Doppler effect, a result of motion towards or away from the probe beam. Therefore, Doppler OCT is sensitive mainly to ascending venules and descending arterioles, and provides a partial microvascular map. OCTA can additionally visualize flow based on decorrelation, a result of translational motion through the coherence volume. Hence, OCTA shows microvasculature more comprehensively than Doppler OCT, including capillaries where transverse flow predominates. Doppler OCT methods have been established to provide quantitative flow, whereas quantitative OCTA is still emerging. View Paper here