Diffuse correlation spectroscopy for non-invasive, micro-vascular cerebral blood flow measurement.
Neuroimage 2014;
85 Pt 1:51-63. [PMID:
23770408 PMCID:
PMC3991554 DOI:
10.1016/j.neuroimage.2013.06.017]
[Citation(s) in RCA: 285] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Revised: 05/10/2013] [Accepted: 06/06/2013] [Indexed: 12/25/2022] Open
Abstract
Diffuse correlation spectroscopy (DCS) uses the temporal fluctuations of near-infrared (NIR) light to measure cerebral blood flow (CBF) non-invasively. Here, we provide a brief history of DCS applications in the brain with an emphasis on the underlying physical ideas, common instrumentation and validation. Then we describe recent clinical research that employs DCS-measured CBF as a biomarker of patient well-being, and as an indicator of hemodynamic and metabolic responses to functional stimuli.
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