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Contribution à la compréhension des signaux de fluxmétrie laser Doppler : traitement des signaux et interprétations physiologiques

Abstract : The comprehension of the peripheral cardiovascular system is an essential key for an early diagnosis of lots of pathologies. The laser Doppler flowmetry signals give information on blood microcirculation leading to a peripheral view of the cardiovascular system. The work undertaken in this thesis has been done to study these signals properties. We first present the laser Doppler flowmetry technique and its use in clinical research. We then detail the analysis conducted in order to have more information on the fluctuations observed on the signals. The implementation of different signal processing tools in temporal and frequency domains has allowed us to show a probable physiological and/or anatomical implication in the origin of these fluctuations. In order to study deeper these fluctuations, we developed a multifractal analysis of the laser Doppler flowmetry signals. The research conducted has shown a possible implication of the physiological properties of the studied zone in the complexity of the laser Doppler flowmetry signals.
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https://tel.archives-ouvertes.fr/tel-00584166
Contributor : Anne-Marie Plé <>
Submitted on : Thursday, April 7, 2011 - 4:22:52 PM
Last modification on : Monday, October 19, 2020 - 11:05:58 AM
Long-term archiving on: : Friday, July 8, 2011 - 2:58:10 AM

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  • HAL Id : tel-00584166, version 1

Citation

Benjamin Buard. Contribution à la compréhension des signaux de fluxmétrie laser Doppler : traitement des signaux et interprétations physiologiques. Physique Atomique [physics.atom-ph]. Université d'Angers, 2010. Français. ⟨tel-00584166⟩

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