Functional Time Domain Diffuse Correlation Spectroscopy.
Functional Time Domain Diffuse Correlation Spectroscopy.
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DOI:
10.3389/fnins.2022.932119
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发表时间:
2022
影响因子:
4.3
通讯作者:
Carp, Stefan A.
中科院分区:
文献类型:
--
作者:
Ozana, Nisan;Lue, Niyom;Renna, Marco;Robinson, Mitchell B.;Martin, Alyssa;Zavriyev, Alexander I.;Carr, Bryce;Mazumder, Dibbyan;Blackwell, Megan H.;Franceschini, Maria A.;Carp, Stefan A.
关键词:
Time-domain diffuse correlation spectroscopy (TD-DCS) offers a novel approach to high-spatial resolution functional brain imaging based on the direct quantification of cerebral blood flow (CBF) changes in response to neural activity. However, the signal-to-noise ratio (SNR) offered by previous TD-DCS instruments remains a challenge to achieving the high temporal resolution needed to resolve perfusion changes during functional measurements. Here we present a next-generation optimized functional TD-DCS system that combines a custom 1,064 nm pulse-shaped, quasi transform-limited, amplified laser source with a high-resolution time-tagging system and superconducting nanowire single-photon detectors (SNSPDs). System characterization and optimization was conducted on homogenous and two-layer intralipid phantoms before performing functional CBF measurements in six human subjects. By acquiring CBF signals at over 5 Hz for a late gate start time of the temporal point spread function (TPSF) at 15 mm source-detector separation, we demonstrate for the first time the measurement of blood flow responses to breath-holding and functional tasks using TD-DCS.
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影响因子:
3.8
作者:
Gulinatti, Angelo;Ceccarelli, Francesco;Rech, Ivan
通讯作者:
Rech, Ivan
影响因子:
2.4
作者:
Qiu, Lina;Zhang, Tingzhen;Li, Jun
通讯作者:
Li, Jun
影响因子:
5.3
作者:
Mazumder D;Wu MM;Ozana N;Tamborini D;Franceschini MA;Carp SA
通讯作者:
Carp SA
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.