We demonstrate a new coherence gated Diffuse Correlation Spectroscopy (DCS) instrument for pathlength resolved measurement of flow, and tissue optical properties, using a continuous wave low coherence source and a Mach-Zehnder interferometer.

This paper demonstrates a novel approach for fast, single-shot Multi-Exposure Speckle Imaging of blood flow with a simplified imaging setup. Our method can transform existing single-exposure speckle images to quantitative flow images.