title: Cellular phone-based photoplethysmographic imaging.
abstract: We present study results on visible light reflection photoplethysmographic (PPG) imaging with a mobile cellular phone operated in video imaging mode. PPG signal components around 0.1 Hz attributed to the sympathetic component of the heart rate, 1 Hz as the heart rate and 2 Hz as heart rate high order harmonic were quantified on the index finger of a healthy volunteer. The green channel reported PPG signals throughout the sampled area. The blue and red channel returned plethysmographic information, but the signal strength was highly position specific. Our results obtained with a cellular phone as the data acquisition device are encouraging, especially in the broad context of personal or home-based care and the role of cellular phone technology in medical imaging.
authors.affiliation: Tissue Optics and Microcirculation Imaging (TOMI) Facility, National Biophotonics and Imaging Platform Ireland (NBIPI),Department of Physics, University of Limerick, Ireland. enock.jonathan@ul.ie
authors.forename: Enock
authors.initials: E
authors.lastname: Jonathan
authors.forename: Martin J
authors.initials: MJ
authors.lastname: Leahy
mesh_terms: D040421:Cell Phone; D003952:Diagnostic Imaging / Q000295:instrumentation*; D004867:Equipment Design; D005385:Fingers; D006339:Heart Rate; D006801:Humans; D008027:Light; D017156:Photoplethysmography / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted