Spectrum analysis of fluctuations of RBC velocity in microvessels by using microscopic laser Doppler velocimetry

Eiji Okada, Yutaka Fukuoka, Jun Umetani, Eiichi Sekizuka, Chikara Oshio, Haruyuki Minamitani

    Research output: Contribution to journalConference article

    2 Citations (Scopus)

    Abstract

    The velocity of red blood cells (RBCs) in microvessels of rat mesentery was measured using microscopic laser Doppler velocimetry. In order to estimate the periodicity of the RBC velocity fluctuation accurately, the power spectrum of the velocity was calculated by means of the fast Fourier transform. The amplitude of the pulsatile component was quite large in the spectrum of the RBC velocity fluctuation in arterioles. On the other hand, RBC velocity in venule intermingled the different frequency components. The velocity of the phase shift of the pulsatile component of RBC velocity was estimated by using the cross-spectrum analysis. The propagational velocity of the RBC velocity profiles in arterioles was slower than that of the pulse wave in larger vessels.

    Original languageEnglish
    Pages (from-to)1741-1743
    Number of pages3
    JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
    Volume11 pt 6
    Publication statusPublished - 1989 Dec 1
    EventImages of the Twenty-First Century - Proceedings of the 11th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 2 - Seattle, WA, USA
    Duration: 1989 Nov 91989 Nov 12

    ASJC Scopus subject areas

    • Signal Processing
    • Biomedical Engineering
    • Computer Vision and Pattern Recognition
    • Health Informatics

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