PRINCIPAL SOURCES OF ERRORS IN NONINVASIVE MEDICAL SPECTROPHOTOMETRY. PART 1. PHYSICOTECHNICAL SOURCES AND FACTORS OF ERRORS MEDICAL AND BIOLOGICAL MEASUREMENTS

Early results of complex experimental investigations on the study of instrumental and methodological errors of diagnostics in noninvasive medical spectrophotometry are described. Physical and technical sources and factors of errors are considered for measurements using nonbiological simulation measures. It is shown that the geometric and spectral characteristics of the optical elements and photodetectors, and also selected models and data-processing algorithms in the computer software of the instruments, have the greatest effect on the diagnostic errors.