DOI: : 10.17586/2226-1494-2018-18-5-727-734


Tianmiao Zhang, Y. A. Kononova, M. K. Khodzitskiy, P. S. Demchenko, S. I. Gusev, A. Y. Babenko, E. N. Grineva

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For citation: Tianmiao Zhang, Kononova Yu.A., Khodzitsky M.K., Demchenko P.S., Gusev S.I., Babenko A.Yu., Grineva E.N. Research of human blood optical properties with concentration changes of blood components in terahertz frequency range. Scientific and Technical Journal of Information Technologies, Mechanics and Optics ,2018, vol. 18, no. 5, pp. 727–734 (in Russian). doi: 10.17586/2226-1494-2018-18-5-727-734


Subject of Research.The paper presents the study of blood biochemical composition (bilirubin, creatinine, triglycerides, uric acid) effect on its optical properties, refractive index and absorption coefficient, in terahertz frequency range. Method. To obtain the values of the refractive index and the absorption coefficient, the method of terahertz time-domain spectroscopy was used in the transmission mode. Concentrations of total bilirubin, creatinine and triglycerides were measured in blood serum by the colorimetric method, the pseudokinetic method and the enzymatic method, respectively. The glucose level was determined in blood plasma by the enzyme method. All measurements of blood component concentrations were carried out at the Almazov National Medical Research Centre. Main Results. The optical properties of blood with various biochemical composition were obtained using terahertz time-domain spectroscopy at the frequency of 0.4THz. It is shown that the refractive indices and the absorption coefficients of blood decrease with an increase in the concentration of bilirubin and creatinine. It has also been found that with an increase in the concentration of uric acid and triglycerides, the refractive index of blood increases and the absorption coefficient of blood decreases, respectively. The correlation between the refractive index and the concentration of triglycerides and the correlation between the blood absorption coefficient and the concentration of uric acid were not revealed. Practical Relevance. The observed correlations between the concentrations of blood components and the optical properties are useful in the development of a new technique for blood analysis.

Keywords: terahertz time-domain spectroscopy, optical properties, blood, bilirubin, creatinine, uric acid, triglycerides



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