FMUP - Artigo em Livro de Atas de Conferência Internacional 32 Collection home page Display Statistics
Exploring Ultrasound Images of the Carotid Arteries Using Neural Network Tools
This work aims at 3D model reconstruction and hemodynamic analysis of carotid bifurcations based on hospital ultrasound images. The suggested approach addresses B mode image segmentation as a pattern recognition problem and boundary velocity conditions are extracted from Doppler PW mode velocity data. Both tasks are solved using a combination of artificial neural network (ANN) tools. The development of an integrated technique for geometric reconstruction, structured meshing, blood flow simula...
Reconstructing Stenotic Carotid Models from Ultrasound Images
The goal of the presented research is the development of a computational methodology for hemodynamic analysis of carotid bifurcations based on hospital ultrasound images. In this communication, different strategies for segmentation of B-mode ultrasound images towards 3D model reconstruction of the artery bifurcation are discussed. Using a developed semiautomatic segmentation code, lumen contour identification of a patient with carotid disease is presented.
Structured mesh generation from doppler ultrasound images
Non-invasive ultrasound imaging of human arteries is a widely form used for medical diagnosis of arterial diseases, like atherosclerosis. The objective of this paper is to present a methodology for patient-specific construction of a structured mesh of the carotid artery bifurcation from images obtained with Doppler ultrasound techniques.
Mesh generation and blood flow simulation in human carotid bifurcation
The ability to associate blood flow features with parameters representative of the vessel geometry is fundamental to perform studies that might help surgeons understand the development of artery diseases. A tool to generate structured computational meshes for vascular modeling frameworks and a three dimensional finite element model for blood flow simulation is presented here. Blood flow is described by the incompressible Navier-Stokes equations and the simulation is carried out under pulsatil...
FLUID-STRUCTURE INTERACTION MODELING OF BLOOD FLOW IN A NON-STENOSED COMMON CAROTID ARTERY BIFURCATION
The rupture of atherosclerotic plaques is known to be associated with stresses that act on or within the arterial wall and is one of the leading causes of mortality and disability worldwide. In this study a fluid-structure interaction modeling of blood flow in a non-stenosed common carotid artery bifurcation is carried out using vascular geometries reconstructed from Doppler ultrasound images. Comparison of results between rigid wall model and fluid-structure interaction model is presented.