Segunda presentación: 

Advances in assessing arterial-wall kinetics from ultrasound-image sequences

Descripción:

Cardiovascular diseases are the primary cause of mortality and morbidity worldwide and their cost to society is huge (28 billion euros per year in France). Reducing mortality and costs requires appropriate prevention, as well as early and accurate risk assessment.

The common carotid artery is the preferred vascular site used for screening by means of B-mode ultrasound (US) imaging that allows the clinicians to assess the arterial-wall morphology and motion. Automated wall-segmentation and motion-estimation in US image sequences are of great interest to accurately and reproducibly quantify the parameters of interest.

Most of the existing methods have focused on wall-thickness measurement and on the estimation of the arterial diameter variations that give an insight to the wall distensibility. The goal of our project (http://www.creatis.insa-lyon.fr/site/en/node/43083) is to go further in segmentation and motion-estimation, in order to assess relevant biomechanical parameters of the arterial-wall tissues and thus help stratifying the cardiovascular risk. Towards this objective, advanced methods are being developed to quantify subtle variations of wall-thickness, as well as to estimate the shearing deformation of the arterial-wall tissues in the direction parallel to the blood flow, during the cardiac cycle.

The talk will give an overview of the recently developed methods. The ongoing developments will also be discussed.