Conventional pulse oximeters are accurate at high oxygen saturation under a variety of
physiological conditions but show worsening accuracy at lower saturation (below 70%) …

Purpose: Hemoglobin concentration and oxygenation in tissue are important biomarkers that
are useful in both research and clinical diagnostics of a wide variety of diseases such as …

Photon diffusion theory is used to derive analytical expressions that relate the AC-DC
intensity ratios measured by transmission-mode and reflectance-mode pulse oximeters to …

We present a frequency-domain optical method for real-time noninvasive measurement of
absolute tissue and arterial saturation. This method is based on quantitative measurement of …

This article reviews the optical techniques applied to the determination of intravascular
hemoglobin oxygen saturation as well as the noninvasive estimation of arterial and tissue …

New techniques for determining the hematocrit (Hct) and oxygen saturation (SO 2) of whole
blood from backscattered light measurements are described. First, theoretical and …

The objective of this study was to evaluate a new reflectance pulse oximeter sensor. The
prototype sensor consists of 8 light-emitting diode (LED) chips (4 at 665 nm and 4 at 820 …

We present a re-engineered frequency-domain tissue oximeter operating in the near-
infrared spectral region. This instrument is based on the multi-distance measurement …

Variations of hemoglobin (Hb) oxygenation in tissue provide important indications
concerning the physiological conditions of tissue, and the data related to these variations …

The use of spectroscopic optical coherence tomography to assess hemoglobin oxygen
saturation of whole blood is investigated. We propose to use the differential attenuation …