New simple phenomenological model for laser doppler measurements of blood flow in tissue

Denis Lapitan*, Dmitry Rogatkin, Saydulla Persheyev, Andrey Rogatkin

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Laser Doppler flowmetry (LDF) for measurements of tissue blood flow is well-known today. The basic theory of forming the registered optical signal in LDF is the model developed by R.Bonner and R. Nossal. However, claiming to be a detailed and comprehensive analysis of the interaction of light with tissues, it does not describe many phenomena. Multiple simplifications and assumptions in the model diminish the efforts on the analysis of peculiarities of light scattering inside the tissue, resulting in a very approximate output. In this our study, a qualitatively similar result was obtained with the use of more simple and general approach. It was shown, that the power spectra of analyzed signals in the form of the exponential decay, similar to a fractal noise (1/f noise), is a consequence mainly of the Maxwell’s distribution of moving particles’ velocities. Moreover, in contrast to the classic model, our model shows that the first moment of the frequency is linearly proportional not only to the velocity of red blood cells, but also is inversely proportional to the wavelength of illuminating radiation, that is more physically grounded.

Original languageEnglish
Title of host publicationBIODEVICES 2017 - 10th International Conference on Biomedical Electronics and Devices, Proceedings; Part of 10th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2017
EditorsNathalia Peixoto, Ana Fred, Hugo Gamboa, Mario Vaz
PublisherSciTePress
Pages98-103
Number of pages6
ISBN (Electronic)9789897582165
DOIs
Publication statusPublished - 2017
Event10th International Conference on Biomedical Electronics and Devices, BIODEVICES 2017 - Part of 10th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2017 - Porto, Portugal
Duration: 21 Feb 201723 Feb 2017

Publication series

NameBIODEVICES 2017 - 10th International Conference on Biomedical Electronics and Devices, Proceedings; Part of 10th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2017
Volume2017-January

Conference

Conference10th International Conference on Biomedical Electronics and Devices, BIODEVICES 2017 - Part of 10th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2017
Country/TerritoryPortugal
CityPorto
Period21/02/1723/02/17

Keywords

  • Blood Flow
  • Doppler Effect
  • Flowmetry
  • Frequency
  • Intensity
  • Laser
  • Model
  • Noninvasive
  • Spectrum
  • Tissue

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