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- TU- 0808 : Modèle électromécanique du coeur pour l'analyse d'image et la simulation :: modele coeur
Apercu : This thesis presents a dynamic model of the cardiac electromechanical activity for the analysis of time series of medical images and the simulation of the cardiac function.
First, a method to build volumetric biomechanical models based on tetrahedral meshes is presented.
Nagumo reaction-diffusion equations, enabling the introduction of pathologies and the simulation of surgical procedures.
The myocardium contraction is modeled according to a rheological law which includes an electromechanical coupling and boundary conditions based on blood pressure and volume constraints.
Simulation of a cardiac cycle leads to the validation of some global and local cardiac function parameters.
A cardiac image segmentation process integrating this electromechanical model is then introduced following the deformable model framework.
Preliminary results of this segmentation system indicates that using a priori knowledge about the anatomy, mechanical behavior and motion in a pro-active deformable model improves the robustness and accuracy of the segmentation despite the sparse and noisy nature of medical images.
Ce modèle est ainsi validé à travers certains paramètres globaux et locaux de la fonction ventriculaire cardiaque.
Voir TU-0808 : Modèle électromécanique du coeur pour l'analyse d'image et la simulation - INRIA - EPIDAURE : Modèle biomécanique du coeur :: modele coeur Voir INRIA - EPIDAURE : Modèle biomécanique du coeur
- INRIA - EPIDAURE : Modèle biomécanique du coeur :: modele coeur Voir INRIA - EPIDAURE : Modèle biomécanique du coeur
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