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Updated: Jun 20, 2026

How to Build a Laser Speckle Contrast Imaging (LSCI) System to Monitor Blood Flow
05:24

How to Build a Laser Speckle Contrast Imaging (LSCI) System to Monitor Blood Flow

Published on: November 11, 2010

Blood flow observed by time-varying laser speckle

H Fujii, T Asakura, K Nohira

    Optics Letters
    |September 3, 2009
    PubMed

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    Blood Flow01:29

    Blood Flow

    Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow.