FIELD: medicine.
SUBSTANCE: transmitted light intensity is measured using an implanted receiver. The tissue surface is irradiated with a monochromatic coherent light pulse. The intensity is measured at different points of the light-sensitive area of the receiver. The K contrast of the scattered light speckle pattern is determined. A calibration chart is plotted for speckle pattern K contrast at a wavelength of irradiation dependence on the capillary blood oxygenation degree S at the receiver location depth Z provided that the volume concentration of blood capillaries in the dermis Cb is known. Based on the found speckle pattern K contrast and the calibration chart, the capillary blood degree oxygenation S is determined.
EFFECT: improved measurement accuracy by using the indicator, independent of the epidermis parameters.
3 cl, 3 dwg
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