A new algorithm is proposed for the segmentation of the lumen and bifurcation boundaries of the carotid artery in B-mode ultrasound images. It uses the hipoechogenic characteristics of the lumen for the identification of the carotid boundaries and the echogenic characteristics for the identification of the bifurcation boundaries. The image to be segmented is processed with the application of an anisotropic diff...
Dissertação apresentada para obtenção do grau de Doutor em Ciências de Engenharia, na Faculdade de Engenharia da Universidade do Porto, sob a orientação dos Profs. Drs. José Manuel de Almeida César de Sá e Luísa Maria Pimenta Abreu Costa Sousa
A new algorithm is proposed for the identification and segmentation of the lumen and bifurcation boundaries of the carotid artery in 2D longitudinal ultrasound B-mode images. It uses the hipoechogenic characteristics defining the lumen of the carotid for its identification and echogenic characteristics for the identification of the bifurcation. The input image is preprocessed with the application of an anisotro...
Clinical guidelines have the potential to increase health gains, but also to cause harm. In this opinion article we state some misgivings about the application of the Portuguese National Health Directorate’s guideline type 2 diabetes therapy: metformin in primary care. We seek to highlight guideline wording that may allow for multiple interpretations(alternatives to monotherapy with metformin, hierarchy of drug...
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