FMUP - Artigo em Livro de Atas de Conferência Internacional 36 Collection home page Display Statistics
Wall shear stress description in patient-specific right coronary arteries with stenosis - CFD
The present work shows the relative residence time spatial distribution, the strongest metric of hemodynamic descriptors for assessing atherosclerotic plaque formation, for completely different patient cases: different geometry configuration, different percentage of lumen stenosis and different locations of the stenosis. The stenosis tends to increase, even more, when located between two side-branch bifurcations. Moreover, locations with high roughness have a high tendency to atherosclerosis ...
Automatic reconstruction of the luminal carotid bifurcation axis using transverse ultrasound images
Feature and structure identification in medical images allows a faster identification of certain anomalies and diseases. The study presented here enables the automatic reconstruction of the arterial bifurcation lumen axis using carotid B-mode ultrasound images. The segmentation methodology introduces new indexes in the automatic process aiming better accuracy in the selection of the correct artery structure as compared to previously published developments.
FLUID-STRUCTURE INTERACTION FOR HEMODYNAMIC STUDY IN PATIENT CORONARY ARTERIES - VALIDATION
This work compares the coronary artery hemodynamics, considering rigid and deformable arterial wall throughout a cardiac cycle. A patient-specific study was performed using computational fluid dynamics (CFD) and fluid-structure interaction (FSI) method. The simulations were run through an In-House OpenFOAM software and the commercial ANSYS (R) software for validation. The velocity magnitude, at systolic peak, was achieved in several locations, considering CFD and FSI. The major difference was...