Possibility of non-invasive blood pressure estimation by measurements of force and arteries diameter

International audienceUltrasound examination is the first line procedure for the diagnosis and follow-up of cardiovascular diseases. Instrumenting an ultrasound probe with a force sensor may improve the non-invasive measurement of arterial biomechanical parameters (diameter, pulsatility, intima-media thickness and flow-dependent dilation) by measuring and controlling the force exerted by the sonographer. We present here the results obtained with this approach coupled with image processing for the measurement of arterial diameter changes during the cardiac cycle and dynamic tests. The analysis of artery force feedback provided non-invasively an estimation of blood pressure waveform

ANGIOSPAN

Le logiciel AngioSpan permet d’analyser sur enregistrement des séquences d'images échographiques vasculaires

PULSART : Echographic Image Analysis for Arterial Diameter Estimation.

Analyse d'images échographiques en post traitementMesure de diamètre artériel sur séquence enregistrée Adaptabilité des paramètres de réglage

Diameter and blood pressure estimation in arteries using an echographic instrumented probe

International audienc

Evaluation of lower limb vein biomechanical properties and the effects of compression stockings, with an instrumented ultrasound probe

International audienc

Validation of lower limb segmental volumetry with hand-held, self-positioning three-dimensional laser scanner against water displacement

International audienc

An Ultrasound Look at Korotkoff sounds: the role of pulse wave velocity and flow turbulence

International audienceAims :The aim of this study was to analyze the temporal relationships between pressure, flow, and Korotkoff sounds, providing clues for their comprehensive interpretation.Materials and methods :When measuring blood pressure in a group of 23 volunteers, we used duplex Doppler ultrasonography to assess, under the arm-cuff, the brachial artery flow, diameter changes, and local pulse wave velocity (PWV), while recording Korotkoff sounds 10 cm downstream together with cuff pressure and ECG