Distance between laser head and skin does not influence skin blood flow values recorded by laser speckle imaging
In: ISSN: 0026-2862, 2011
academicJournal
Zugriff:
International audience ; Background:Laser Speckle contrast imaging (LSCI) allows non-contact, real-time recording of cutaneous blood flow (CBF). Different distances from laser-head to skin (distancesL–S) can be chosen by the operator to perform these recordings. We aimed to evaluate the impact of different DistancesL–S on the analysis of rest blood flow and post-occlusive reactive hyperemia (PORH).Methods:Four distancesL–S (10, 15, 20, and 30 cm) were evaluated in a random order in 11 healthy subjects. We analyzed the concordance between each recording at each distanceL–S. We compared CBF results (absolute values and cutaneous vascular conductance (CBF divided by mean arterial pressure)) obtained for each distanceL–S. The intra-subject coefficients of variation due to distancesL–S (intra-CV, in%) were also studied.Results:The mean “r” (standard deviation) cross-correlation coefficient was 0.99 (0.00) between each CBF trace issued from different distanceL–S. Both kinds of CBF results, at rest and for PORH peak, show non-significant differences when the distanceL–S is modified. The intra-CV varies from 5.9% to 8.6% at rest and from 5.6% to 9.1% for the PORH peak.Conclusion:DistanceL–S neither influences SBFR at rest, nor at peak post-occlusive hyperemia in the 10–30 cm interval using LSCI.
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Distance between laser head and skin does not influence skin blood flow values recorded by laser speckle imaging
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Autor/in / Beteiligte Person: | Mahé, Guillaume ; Haj-Yassin, F. ; Rousseau, Pascal ; Humeau, Anne ; Durand, Sylvain ; Leftheriotis, G. ; Abraham, P. ; Centre Hospitalier Universitaire d'Angers (CHU Angers) ; PRES Université Nantes Angers Le Mans (UNAM) ; Biologie Neurovasculaire Intégrée (BNVI) ; Université d'Angers (UA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS) ; Laboratoire d'Ingéniérie des Systèmes Automatisés (LISA) ; Université d'Angers (UA) ; Motricité, interactions, performance EA 4334 / Movement - Interactions - Performance (MIP) ; Le Mans Université (UM)-Centre Hospitalier Universitaire de Nantes = Nantes University Hospital (CHU Nantes)-Université de Nantes - UFR des Sciences et Techniques des Activités Physiques et Sportives (UFR STAPS) ; Université de Nantes (UN)-Université de Nantes (UN) |
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Zeitschrift: | ISSN: 0026-2862, 2011 |
Veröffentlichung: | HAL CCSD ; Elsevier, 2011 |
Medientyp: | academicJournal |
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