Operator’s Manual Page 9 of 89
OXY-2-USM-1, REV K
Section I. Introduction
A. Overview
The T.Ox™ Tissue Oximeter is an optically based device that non-invasively estimates the percent oxygen saturation (StO
2
%) in a
volume of tissue underneath the sensor. T.Ox™ Tissue Oximeter measurements are based on its proprietary technology called ODIS.
(See “The ODIS Technology” section, below.) The T.Ox™ Tissue Oximeter works by emitting two different wavelengths of near-
infrared (NIR) light into tissue at depths of 0–10 mm. The light is transmitted to the tissue by two light sources, and collected by four
photo detectors in each sensor.
As the light is collected and measured, the absorption and scattering coefficients of the tissue are calculated. Each tissue component has
a unique absorption spectrum or light “signature”. The T.Ox™ Tissue Oximeter uses two wavelengths (690 and 830 nm) of near-
infrared light specific to oxyhemoglobin (HbO
2
) and deoxyhemoglobin (Hb) for the noninvasive real-time measurements of StO
2
.
The ODIS Technology
Optical Diffusion Imaging Spectroscopy (ODIS) is a non-invasive tissue characterization method based on measurement of reflectance
or transmittance of near-infrared light shed onto tissue surface.
In biological tissue, near-infrared light is highly scattered and moderately absorbed. This allows photons to travel up to one meter in
tissue, in a random walk fashion, before being absorbed. Diffuse optical imaging is achieved by sending various optical signals to
various locations of tissue and measuring the corresponding diffuse reflectance or transmittance on tissue surface. ViOptix has
developed special source-detector patterns and algorithms, which make the measurements accurate, real-time and insensitive to external
factors. The system’s self-calibrating approach makes it possible to perform imaging and spectroscopy without a baseline data set.
This is particularly important in saving exam time.
Содержание T.Ox OXY-2-USM-1
Страница 32: ...Operator s Manual Page 32 of 89 OXY 2 USM 1 REV K Figure 7 Low Signal Quality Alarm ...
Страница 37: ...Operator s Manual Page 37 of 89 OXY 2 USM 1 REV K Figure 11 Review StO2 Screen ...
Страница 46: ...Operator s Manual Page 46 of 89 OXY 2 USM 1 REV K Figure 15 View Numerics Screen Single Mode ...
Страница 72: ...Operator s Manual Page 72 of 89 OXY 2 USM 1 REV K Figure 33 Discard Confirmation Screen ...
Страница 75: ...Operator s Manual Page 75 of 89 OXY 2 USM 1 REV K Figure 35 Reboot Recovery Screen ...
Страница 76: ...Operator s Manual Page 76 of 89 OXY 2 USM 1 REV K Figure 36 Sensor Data Disposal ...
Страница 84: ...Operator s Manual Page 84 of 89 OXY 2 USM 1 REV K ...