Measurement of shear-induced diffusion of red blood cells using dynamic light scattering-optical coherence tomography
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Published version
Date
2018-01-01
Authors
Tang, Jianbo
Erdener, Sefik Evren
Li, Baoqiang
Fu, Buyin
Sakadzic, Sava
Carp, Stefan A.
Lee, Jonghwan
Boas, David A.
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OA Version
Published version
Citation
Jianbo Tang, Sefik Evren Erdener, Baoqiang Li, Buyin Fu, Sava Sakadzic,
Stefan A. Carp, Jonghwan Lee, David A. Boas, "Measurement of shearinduced diffusion of red blood cells using dynamic light scattering-optical
coherence tomography," Proc. SPIE 10481, Neural Imaging and Sensing 2018, 104811N (12 February 2018); https://doi.org/10.1117/12.2290345
Abstract
Dynamic Light Scattering-Optical Coherence Tomography (DLS-OCT) takes the advantages of using DLS to measure
particle flow and diffusion within an OCT resolution-constrained 3D volume, enabling the simultaneous measurements
of absolute RBC velocity and diffusion coefficient with high spatial resolution. In this work, we applied DLS-OCT to
measure both RBC velocity and the shear-induced diffusion coefficient within penetrating venules of the somatosensory
cortex of anesthetized mice. Blood flow laminar profile measurements indicate a blunted laminar flow profile, and the
degree of blunting decreases with increasing vessel diameter. The measured shear-induced diffusion coefficient was
proportional to the flow shear rate with a magnitude of ~ 0.1 to 0.5 × 10-6 mm2
. These results provide important
experimental support for the recent theoretical explanation for why DCS is dominantly sensitive to RBC diffusive
motion.
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© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.