title: A portable wireless near-infrared spatially resolved spectroscopy system for use on brain and muscle.
abstract: We have designed, built and successfully tested a prototype portable and wireless near-infrared spectroscopy system. It takes forward the well-established series of NIRO spectroscopy instruments made by Hamamatsu Photonics (Hamamatsu City, Japan). It uses an identical optical probe, and has a data acquisition rate of 10 Hz. It illuminates the tissue with laser diode sources at 3 wavelengths of 775, 810 and 850 nm, and detects the reflected light with 2 silicon photodiode detectors at 2 different separations, enabling spatially resolved spectroscopy to be performed. We have tested it with both in vitro and in vivo experiments to establish its basic functionality for use in studies of both brain and muscle.
authors.affiliation: Department of Medical Physics and Bioengineering, University College London, Gower Street, London, WC1E 6BT, UK. Electronic address: everdell@medphys.ucl.ac.uk.
authors.forename: N L
authors.initials: NL
authors.lastname: Everdell
authors.forename: D
authors.initials: D
authors.lastname: Airantzis
authors.forename: C
authors.initials: C
authors.lastname: Kolvya
authors.forename: T
authors.initials: T
authors.lastname: Suzuki
authors.forename: C E
authors.initials: CE
authors.lastname: Elwell
mesh_terms: D001921:Brain; D004867:Equipment Design; D006801:Humans; D008297:Male; D009132:Muscles; D015203:Reproducibility of Results; D013055:Spectrophotometry, Infrared / Q000295:instrumentation*; D014636:Valsalva Maneuver; D016138:Walking / Q000502:physiology; D059015:Wireless Technology / Q000295:instrumentation*
keywords: Near-infrared spectroscopy; Oximetry