Oxygen saturation determined using a novel wavelet ratio surface

Med Eng Phys. 2005 Apr;27(3):245-8. doi: 10.1016/j.medengphy.2004.10.002.

Abstract

A wavelet-based method is presented for oxygen saturation measurement using photoplethysmogram signals from a standard pulse oximeter device. The transform moduli of both red and infrared signals are used to derive a novel wavelet ratio surface. Projection of the pulse component onto this surface allows optimal derivation of oxygen saturation.

Publication types

  • Comparative Study
  • Evaluation Study
  • Validation Study

MeSH terms

  • Algorithms*
  • Diagnosis, Computer-Assisted / methods*
  • Humans
  • Oximetry / methods*
  • Oxygen / blood*
  • Photoplethysmography / methods*
  • Reproducibility of Results
  • Sensitivity and Specificity
  • Signal Processing, Computer-Assisted*

Substances

  • Oxygen