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completed

Establishment of Local Arterial Stiffness Normal Values (Carotid and Femoral) on Healthy Volunteers Using Supersonic Shear Imaging

key information

study id #: NCT01096264

condition: Healthy Volunteers , Vascular Ehlers Danlos Syndrome

status: completed

purpose:

Arterial stiffness is associated with increased risk of cardiovascular events and death.

Most of existing technique need dedicated device for arterial stiffness evaluation and indirect calculation of intra arterial pressure. Supersonic Shear Imaging (SSI) is a novel non-invasive technique based on remote palpation of biological tissues that can image with very high temporal resolution (up to 10,000 images/s) and quantify the local viscoelastic properties of tissues. The investigators goal was to apply this SSI technique for arterial stiffness evaluation and local pulse wave velocity (PWV) calculation.

As a first step, the primary goal of this study is to establish normal values of local pulse wave velocity and arterial stiffness (carotid and femoral) by SSI on hundred healthy volunteers.

intervention: Other: SSI and SphygmoCor® evaluations
SSI evaluation need Aixplorer vascular ultrasound machine (available in our department) with 8 MHz linear array probe applied on the carotid and femoral artery.
SphygmoCor® evaluation used pressure captors on carotid and femoral sites to record the intra-arterial pressure wave time delay after QRS wave. After distance calculation between the two sites, Aortic PWV can be derived.