Concept
Hemodynamics
Related publications (270)
Spatio-Temporal Nonrigid Registration for Ultrasound Cardiac Motion Estimation
Michaël Unser, Michael Sühling
We propose a new spatio-temporal elastic registration algorithm for motion reconstruction from a series of images. The specific application is to estimate displacement fields from two-dimensional ultrasound sequences of the heart. The basic idea is to find ...
IEEE2005High-speed laser Doppler perfusion imaging using an integrating CMOS image sensor
This paper describes the design and the performance of a new high-speed laser Doppler imaging system for monitoring blood flow over an area of tissue. The new imager delivers high-resolution flow images (256 x 256 pixels) every 2 to 10 seconds, depending o ...
2005Added-mass effect in the design of partitioned algorithms for fluid-structure problems
The aim of this work is to provide a mathematical contribution to explain the numerical instabilities encountered under certain combinations of physical parameters in the simulation of fluid-structure interaction (FSI) when using loosely coupled time advan ...
Elsevier2005Arterial in vitro remodeling
Vascular remodeling is defined as any enduring change in the size and composition of an adult blood vessel, allowing adaptation or repair. The vascular remodeling response has been shown to depend on a variety of endogenous and environmental factors. Physi ...
EPFL2004One dimensional and multiscale models for blood flow circulation
The aim of this work is to provide mathematically sound and computationally effective tools for the numerical simulation of the interaction between fluid and structures as occurring, for instance, in the simulation of the human cardiovascular system. This ...
EPFL2004Conductance catheter-based assessment of arterial input impedance, arterial function, and ventricular-vascular interaction in mice
Nikolaos Stergiopoulos, Patrick Segers, Nico Westerhof
Global assessment of both cardiac and arterial function is important for a meaningful interpretation of pathophysiological changes in animal models of cardiovascular disease. We simultaneously acquired left ventricular (LV) and aortic pressure and LV volum ...
2004Analysis of lumped parameter models for blood flow simulations and their relation with 1D models
This paper provides new results of consistence and convergence of the lumped parameters (ODE models) toward one-dimensional (hyperbolic or parabolic) models for blood flow. Indeed, lumped parameter models (exploiting the electric circuit analogy for the ci ...
2004A constitutive formulation of arterial mechanics including vascular smooth muscle tone
Nikolaos Stergiopoulos, Martin Zulliger, Alexander Rachev
A pseudo-strain energy function (pseudo-SEF) describing the biomechanical properties of large conduit arteries under the influence of vascular smooth muscle (VSM) tone is proposed. In contrast to previous models that include the effects of smooth muscle co ...
2004Multidimensional pharmacokinetic models applied to the design of drug-eluting stents
Drug-eluting stents are cardiovascular stents able to release a medical drug after implantation. The medical drug is, in general, aimed at healing the vascular tissues injured after implantation and to prevent restenosis. In spite of their apparent simplic ...
2004Numerical analysis of axisymmetric flows and methods for fluid-structure interaction arising in blood flow simulation
In this thesis we propose and analyze the numerical methods for the approximation of axisymmetric flows as well as algorithms suitable for the solution of fluid-structure interaction problems. Our investigation is aimed at, but are not restricted to, the s ...
EPFL2004