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BACKGROUND AND PURPOSE Individual rupture risk assessment of intracranial aneurysms is a major issue in the clinical management of asymptomatic aneurysms. Aneurysm rupture occurs when wall tension exceeds the strength limit of the wall tissue. At present, aneurysmal wall mechanics are poorly understood and thus, risk assessment involving mechanical(More)
BACKGROUND AND PURPOSE The present study follows an experimental work based on the characterization of the biomechanical behavior of the aneurysmal wall and a numerical study where a significant difference in term of volume variation between ruptured and unruptured aneurysm was observed in a specific case. Our study was designed to highlight by means of(More)
Bone is a complex system, and could be modeled as a poroelastic media. The aim of this paper is to identify the macroscopic value of the cortical bone permeability coefficient. A simple experimental method was designed in order to determine the permeability coefficient. Two bone samples taken from different ox femurs were filled with water, to place them(More)
The objective of this study is to propose a numerical model of thermal damage to the skin. This model simulates the propagation of a burn and suggests treatments to prevent it from spreading. In order to achieve this goal, we developed a 3D multi-layer finite element model of the skin coupled with a model presenting hyperthermic damage. The numerical model(More)
Technology improvement makes PKM faster and faster. From this speed it appears uncontrolled vibrations which disrupt PKM functioning. The urge to produce modelling enabling to predict dynamic perturbations is more and more important. To this day, linearized dynamic models are incomplete, ignoring account of speed and acceleration over trajectory. In this(More)
BACKGROUND Five randomized controlled trials recently appeared in the literature demonstrating that early mechanical thrombectomy in patients with acute ischemic stroke is significantly related to an improved outcome. Stent retrievers are accepted as the most effective devices for intracranial thrombectomy. OBJECTIVE To analyze the mechanical properties(More)
Background- End systolic left ventricular (LV) elastance (Ees) has been previously calculated and validated invasively using LV pressure-volume (PV) loops. Non invasive methods have been proposed, but clinical application remains complex. The aim of the present study was to 1) estimate Ees according to modeling of LV PV curve during ejection ("Ejection PV(More)
In order to better understand the thermomechanical behavior of the skin and its direct environment, we present an experimental study using infrared thermography. This experimental study aims to highlight quantitatively some effects of blood flow on the heat diffusion. The originality of this research is to change the blood flow by using effects of gravity(More)