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Method and device for determining the compliance and the blood pressure of an artery by ultrasonic echography



Method and device for determining the compliance and the blood pressure of an artery by ultrasonic echography



Official Gazette of the United States Patent and Trademark Office Patents 1238(1)



The invention relates to an ultrasonic echograph apparatus and method for locally determining biological data constituted by the time varying part of the blood pressure and the arterial wall compliance variations in function of the arterial radius variations, and includes the steps of measuring blood flow rate, arterial radius variation, and the mean arterial radius variation for two neighboring excitation lines and a hydrodynamic inductance. The method further includes steps of modelling, based on the measures, arterial wall behaviors by arterial wall stress-strain laws according to parametric relationships giving the biological data to determine, in the case of purely elastic or visco-elastic arterial behavior the parameters of the parametric relationships being related to the arterial dilatation and contraction phases over a whole cardiac cycle.

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Accession: 035290122

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