6 February 2007 Multi-wavelength photoplethysmography for simultaneous recording of skin blood pulsations at different vascular depths
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Abstract
Parallel recording of reflection photoplethysmography (PPG) signals in broad spectral band has been performed, and potential of this approach for assessment of blood microcirculation at various vascular depths is discussed. PPG signals have been simultaneously detected at cw laser wavelengths sets comprising 405 nm, 532 nm, 645 nm, 807 nm and 1064 nm. Different signal baseline responses to breath holding at different wavelengths have been observed, as well as different shapes of the PPG pulses originated from the same heartbeat.
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Janis Spigulis, Janis Spigulis, Lasma Gailite, Lasma Gailite, Alexey Lihachev, Alexey Lihachev, } "Multi-wavelength photoplethysmography for simultaneous recording of skin blood pulsations at different vascular depths", Proc. SPIE 6430, Advanced Biomedical and Clinical Diagnostic Systems V, 64301I (6 February 2007); doi: 10.1117/12.724071; https://doi.org/10.1117/12.724071
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