57 documents found, page 1 of 6
On the development of diagnostic support algorithms based on CPET biosignals da...
Pinheiro, Rafael F.; Fonseca-Pinto, RuiFor preventing health complications and reducing the strain on healthcare systems, early identification of diseases is imperative. In this context, artificial intelligence has become increasingly prominent in the field of medicine, offering essential support for disease diagnosis. This article introduces an algorithm that builds upon an earlier methodology to assess biosignals acquired through cardiopulmonary e...
Prediabetes risk classification algorithm via carotid bodies and K-means cluste...
Pinheiro, Rafael F.; Guarino, Maria P.; Lages, Marlene; Fonseca-Pinto, RuiDiabetes is a disease that affects millions of people in the world and its early screening prevents serious health problems, also providing relief in the demand for healthcare services. In the search for methods to support early diagnosis, this article introduces a novel prediabetes risk classification algorithm (PRCA) for type-2 diabetes mellitus (T2DM), utilizing the chemosensitivity of carotid bodies (CB) an...
A memory failure computational model in Alzheimer-like disease via continuous d...
Pinheiro, Rafael Fernandes; Colón, Diego; Fonseca-Pinto, RuiAlzheimer’s disease (AD) is a degenerative neurological condition that impacts millions of individuals across the globe and remains without a healing. In the search for new possibilities of treatments for this terrible disease, this work presents the improved Alzheimer-like disease (IALD) model for memory failure and connects it to a new control technique that establishes a cure for the memory lost, either in b...
Lurie Control Systems Applied to the Sudden Cardiac Death Problem Based on Chua...
Pinheiro, Rafael F.; Colón, Diego; Antunes, Alexandre; Fonseca-Pinto, RuiSudden cardiac death (SCD) represents a critical public health challenge, emphasizing the need for predictive techniques that model complex physiological dynamics. Studies indicate that the “V-trough” pattern in sympathetic nerve activity (SNA) could act as an early indicator of potentially fatal cardiac events, which can be effectively modeled using a modified version of Chua’s chaotic system, incorporating th...
Hybrid cardiac telerehabilitation after acute coronary syndrome: self-selection...
Ferreira, José Bernardo; Cabral, Margarida; Santos, Rita; Ferreira, Marta Susana; Fonseca-Pinto, Rui; Antunes, Alexandre; Januário, FilipaAims: To evaluate the effectiveness of a hybrid cardiac telerehabilitation (HCTR) program after acute coronary syndrome (ACS) on patient quality of life (QoL) and physical activity indices throughout phases 2-3 and establish predictors for hybrid program self-selection. Methodology: This single-centre longitudinal retrospective study included patients who attended a cardiac rehabilitation program (CRP) between ...
Prescrição do tipo intervalado na Fase III de programas de reabilitação cardíac...
Ferreira, Fábio; Alves, João; Antunes, Alexandre; Januário, Filipa; Fonseca-Pinto, RuiIntrodução: O processo de reabilitação cardíaca é o resultado das atividades necessárias para garantir aos pacientes portadores de cardiopatia as melhores condições físicas, mentais e sociais, de forma a retomarem a sua natural posição na comunidade e levar uma vida ativa e produtiva. Os Programas de Reabilitação Cardíaca (PRC) constituem uma forma de prevenção secundária que incluem a prescrição de exercício f...
Caraterização autonómica da insuficiência cardíaca
Santos, Sónia; Pinheiro, Rafael; Fonseca-Pinto, RuiIntrodução: A fisiopatologia da insuficiência cardíaca (IC) é caracterizada por alterações hemodinâmicas em resultado da ativação neuro-hormonal e desequilíbrio autonómico com aumento da atividade simpática e redução da atividade parassimpática. Assim, a avaliação do contributo das componentes do Sistema Nervoso Autónomo (Simpático e Parassimpático) constitui uma metodologia com interesse clínico na classificaç...
Metodologias de acesso à função do Sistema Nervoso Autónomo
Pinheiro, Rafael; Santos, Sónia; Vieira-Lopes, Nuno; Fonseca-Pinto, RuiIntrodução: A avaliação da função do Sistema Nervoso Autónomo (SNA) é hoje utilizada em vários contextos clínicos na caraterização e diagnóstico de disautonomias. Esta avaliação compreende as funções sudomotora, cardiovagal e adrenérgica. Os testes para avaliação do SNA podem classificar-se em testes indiretos e testes diretos. Relativamente aos testes indiretos, estes têm a desvantagem de fornecer informação a...
Fine-tuning pre-trained neural networks for medical image classification in sma...
Spolaôr, Newton; Lee, Huei Diana; Mendes, Ana Isabel; Nogueira, Conceição; Parmezan, Antonio Rafael Sabino; Takaki, Weber Shoity ResendeConvolutional neural networks have been effective in several applications, arising as a promising supporting tool in a relevant Dermatology problem: skin cancer diagnosis. However, generalizing well can be difficult when little training data is available. The fine-tuning transfer learning strategy has been employed to differentiate properly malignant from non-malignant lesions in dermoscopic images. Fine-tuning...
Hybrid Cardiac Telerehabilitation After Acute Coronary Syndrome: Self-selection...
Ferreira, José Bernardo; Cabral, Margarida; Santos, Rita; Ferreira, Marta; Fonseca-Pinto, Rui; Antunes, Alexandre; Januário, FilipaAims: To evaluate the effectiveness of a hybrid cardiac telerehabilitation (HCTR) program after acute coronary syndrome (ACS) on patient quality of life (QoL) and physical activity indices throughout phases 2-3 and establish predictors for hybrid program self-selection. Methodology: This single-centre longitudinal retrospective study included patients who attended a cardiac rehabilitation program (CRP) between ...