Portable, high speed blood flow measurements enabled by long wavelength, interferometric diffuse correlation spectroscopy (LW-iDCS).
Portable, high speed blood flow measurements enabled by long wavelength, interferometric diffuse correlation spectroscopy (LW-iDCS).
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DOI:
10.1038/s41598-023-36074-8
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发表时间:
2023-05-31
影响因子:
4.6
通讯作者:
中科院分区:
文献类型:
--
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Diffuse correlation spectroscopy (DCS) is an optical technique that can be used to characterize blood flow in tissue. The measurement of cerebral hemodynamics has arisen as a promising use case for DCS, though traditional implementations of DCS exhibit suboptimal signal-to-noise ratio (SNR) and cerebral sensitivity to make robust measurements of cerebral blood flow in adults. In this work, we present long wavelength, interferometric DCS (LW-iDCS), which combines the use of a longer illumination wavelength (1064 nm), multi-speckle, and interferometric detection, to improve both cerebral sensitivity and SNR. Through direct comparison with long wavelength DCS based on superconducting nanowire single photon detectors, we demonstrate an approximate 5× improvement in SNR over a single channel of LW-DCS in the measured blood flow signals in human subjects. We show equivalence of extracted blood flow between LW-DCS and LW-iDCS, and demonstrate the feasibility of LW-iDCS measured at 100 Hz at a source-detector separation of 3.5 cm. This improvement in performance has the potential to enable robust measurement of cerebral hemodynamics and unlock novel use cases for diffuse correlation spectroscopy.
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影响因子:
3.4
作者:
James E;Powell S
通讯作者:
Powell S
DOI:
10.1364/josaa.14.000192
发表时间:
1997-01-01
影响因子:
1.9
作者:
Boas, DA;Yodh, AG
通讯作者:
Yodh, AG
影响因子:
5.3
作者:
Boas, David A.;Sakadzic, Sava;Carp, Stefan A.
通讯作者:
Carp, Stefan A.
DOI:
10.1016/j.jpeds.2021.05.024
发表时间:
2021-09
期刊:
The Journal of pediatrics
影响因子:
--
作者:
Flanders TM;Lang SS;Ko TS;Andersen KN;Jahnavi J;Flibotte JJ;Licht DJ;Tasian GE;Sotardi ST;Yodh AG;Lynch JM;Kennedy BC;Storm PB;White BR;Heuer GG;Baker WB
通讯作者:
Baker WB
影响因子:
3.7
作者:
Beauchamp, Michael S.;Beurlot, Michelle R.;Oghalai, John S.
通讯作者:
Oghalai, John S.