[In vitro determination of the pressure-diameter relationship and velocity profiles by ultrasonic technics. In vivo application].
A good knowledge of arterial flow mechanics and of the phenomena associated with fluid-boundary interactions is necessary for the determination of some fundamental parameters such as velocity, pressure and pressure-diameter relationship during a cardiac cycle. Ultrasonic techniques were developed on a test bench and directly applied to animals without major modification. On such a test bench allowing a good simulation of physiological type flows, velocity field and pressure-diameter relationship were determined. In vivo application of these techniques allowed a systematic analysis of velocity profiles in the rabbit abdominal aorta and a precise approach of rheological properties of the vascular wall.
Rieu
R
R
Institut de Mécanique des Fluides de Marseille, UM 34 du CNRS.
Friggi
A
A
Farahifar
D
D
Cassot
F
F
D000818:Animals; D001012:Aorta, Abdominal / Q000033:anatomy & histology / Q000502:physiology; D001783:Blood Flow Velocity; D001794:Blood Pressure; D001808:Blood Vessels / Q000033:anatomy & histology* / Q000502:physiology; D004548:Elasticity; D011817:Rabbits; D012212:Rheology; D014463:Ultrasonography; D014783:Viscosity
Détermination in vitro de la relation pression-diamètre et des profils de vitesse par des techniques ultrasonores. Application in vivo.