NUMERICAL SIMULATION OF CAROTID ARTERY STENOSIS BEFORE STENTING

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2016

Autores

Henriques, HAM (Autor) Outra; Catarina Castro (Autor) FEUP; Luísa Costa Sousa (Autor) FEUP; Carlos Alberto Conceição António (Autor) FEUP; Azevedo, E (Autor) Outra

Ata de Conferência Internacional

Título: Integrity-Reliability-Failure

Páginas: 881-884

Indexação

ISI Web of Knowledge - 0 Citações

Outras Informações

ID Authenticus: P-00M-92K

Abstract (EN): The development of a computational methodology to simulate and to access the hemodynamics of patient-specific carotid artery bifurcation with stenosis is presented. Three-dimensional modeling of the carotid artery was created from ultrasound images of a carotid artery bifurcation with stenosis before stent implantation, and realistic boundary conditions were imposed at the inlet and outlet of the computational vessels. A new semi-automatic lumen segmentation methodology for longitudinal and transversal B-mode images minimizes the error introduced along the building of the model geometry. Patient-specific pulsatile velocity waveforms registered on pulsed-wave Doppler images allow the definition of Womersley velocity profiles to be used as as boundary velocities. ANSYS/Fluent software is used to perform the tetrahedral mesh generation and the blood flow simulation. Calculated hemodynamic descriptors based on simulated wall shear stress values are able to capture abnormal flow conditions which present an import role in the local development of atherosclerotic plaques.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4