PHYSICAL FOUNDATIONS OF OPTICAL OXIMETRY
In the paper the physical background for the methods of medical optic oximentry - noninvasive diagnostic technique to evaluate a relative content of oxyhaemoglobin in the blood of examinee - is described. It is shown, how on the basic principles of photometry the relative content of oxygenated and deoxygenated fractions of haemoglobin can be calculated with the use of methods of absorption spectroscopy and elastic scattering spectroscopy. All needed terms and definitions are presented. Problems of errors and metrology of such measurements as well as problems of development of calculation algorithms and diagnostics methodology in the conditions of multicompound light-scattering biological tissues are discussed.