592
R. B. Pachori and V. Gupta
Fig. 12.38 Inhomogeneity
effects [36]
Fig. 12.39 Reflection mode
[35]
Light source
Light sink
Skin
Light paths
Fig. 12.40 Transmitted
mode [35]
Light sink
Light source
of both wavelengths and these paths vary with hemoglobin oxygen saturation which
is denoted by S [35].
The light is also dynamically modulated by physiological phenomena in tissue
due to the reason that a physiological phenomenon modulates optical properties
of the tissue. There are various light absorbers present in tissue such as pulsatile
arterial blood, nonpulsatile arterial blood, capillary blood, venous blood, bloodless
R. B. Pachori and V. Gupta
Fig. 12.38 Inhomogeneity
effects [36]
Fig. 12.39 Reflection mode
[35]
Light source
Light sink
Skin
Light paths
Fig. 12.40 Transmitted
mode [35]
Light sink
Light source
of both wavelengths and these paths vary with hemoglobin oxygen saturation which
is denoted by S [35].
The light is also dynamically modulated by physiological phenomena in tissue
due to the reason that a physiological phenomenon modulates optical properties
of the tissue. There are various light absorbers present in tissue such as pulsatile
arterial blood, nonpulsatile arterial blood, capillary blood, venous blood, bloodless