FMUP - Artigo em Livro de Atas de Conferência Internacional 37 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...
Heart Rate Variability during Plateau Waves of Intracranial Pressure: a pilot descriptive study
This study aims to describe heart rate variability during the first episode of plateau waves of intracranial pressure (ICP) in Traumatic Brain Injury (TBI) in order to characterize and identify at bedside this cerebrovascular phenomenon. The general behavior of the heart rate variability (HRV) spectral measures expressed in the medians across patients is concordant with an increased HRV in the latter part of the baseline and plateau wave, followed by a decrease after the event and a new incre...
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.