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Journal of Biomedical Optics

Noncontact diffuse correlation spectroscopy for noninvasive deep tissue blood flow measurement
Author(s): Yu Lin; Lian He; Yu Shang; Guoqiang Yu
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Paper Abstract

A noncontact diffuse correlation spectroscopy (DCS) probe has been developed using two separated optical paths for the source and detector. This unique design avoids the interference between the source and detector and allows large source-detector separations for deep tissue blood flow measurements. The noncontact probe has been calibrated against a contact probe in a tissue-like phantom solution and human muscle tissues; flow changes concurrently measured by the two probes are highly correlated in both phantom (R2 = 0.89, p<10-5) and real-tissue (R2 = 0.77, p<10-5, n = 9) tests. The noncontact DCS holds promise for measuring blood flow in vulnerable (e.g., pressure ulcer) and soft (e.g., breast) tissues without distorting tissue hemodynamic properties.

Paper Details

Date Published: 3 February 2012
PDF: 4 pages
J. Biomed. Opt. 17(1) 010502 doi: 10.1117/1.JBO.17.1.010502
Published in: Journal of Biomedical Optics Volume 17, Issue 1
Show Author Affiliations
Yu Lin, Univ. of Kentucky (United States)
Lian He, Univ. of Kentucky (United States)
Yu Shang, Univ. of Kentucky (United States)
Guoqiang Yu, Univ. of Kentucky (United States)

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