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Scientific article
English

A fast time-domain algorithm for the assessment of tissue blood flow in laser-Doppler flowmetry

Published inPhysics in medicine and biology, vol. 55, no. 13, p. N383-394
Publication date2010
Abstract

In this study, we derive a fast, novel time-domain algorithm to compute the nth-order moment of the power spectral density of the photoelectric current as measured in laser-Doppler flowmetry (LDF). It is well established that in the LDF literature these moments are closely related to fundamental physiological parameters, i.e. concentration of moving erythrocytes and blood flow. In particular, we take advantage of the link between moments in the Fourier domain and fractional derivatives in the temporal domain. Using Parseval's theorem, we establish an exact analytical equivalence between the time-domain expression and the conventional frequency-domain counterpart. Moreover, we demonstrate the appropriateness of estimating the zeroth-, first- and second-order moments using Monte Carlo simulations. Finally, we briefly discuss the feasibility of implementing the proposed algorithm in hardware.

Keywords
  • *Algorithms
  • Computer Simulation
  • Equipment Design
  • Erythrocytes/physiology
  • Fourier Analysis
  • Laser-Doppler Flowmetry/*methods
  • Models, Cardiovascular
  • Monte Carlo Method
  • Motion
  • Phantoms, Imaging
  • *Regional Blood Flow/physiology
  • Time Factors
Citation (ISO format)
BINZONI, Tiziano, SEELAMANTULA, Chandra Sekhar, VAN DE VILLE, Dimitri. A fast time-domain algorithm for the assessment of tissue blood flow in laser-Doppler flowmetry. In: Physics in medicine and biology, 2010, vol. 55, n° 13, p. N383–394. doi: 10.1088/0031-9155/55/13/N02
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ISSN of the journal0031-9155
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