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Resumo(s)
As Miocardiopatias são doenças do miocárdio, com anomalias estruturais e funcionais, sendo que, de acordo com a European Society of Cardiology, podem ser divididas em subgrupos de acordo com o seu fenótipo específico. A Ressonância Magnética Cardíaca (RMC) é uma técnica que, através da aplicação de pulsos de radiofrequência e da captação de sinal, permite uma elevada capacidade de caracterização tecidular, importante na avaliação morfo-funcional cardíaca, no diagnóstico etiológico e na determinação do prognóstico. Neste trabalho é analisado a aplicação da RMC no estudo da Miocardiopatia Hipertrófica, Dilatada, Restritiva, Arrimotgénica, não Compactada do Ventrículo Esquerdo e da Miocardite, assim como na avaliação de algumas doenças sistémicas com envolvimento cardíaco. Com o recurso a um conjunto variado de sequências de pulso, a imagens cine funcionais e ao uso de contraste paragmagnético, a RMC destaca-se dos exames complementares, até então considerados de referência, ultrapassando algumas das suas limitações e tornando-se um método gold standard na abordagem das Miocardiopatias.
The Cardiomyopathies are a group of myocardial disorders, with structural and functional anomalies that, according to European Society of Cardiology, can be subclassified into clusters based on their specific phenotype. The Cardiovascular Magnetic Resonance (CMR) imaging is a modality that, through the application of radiofrequency pulses and signal detection, provides a high resolution tissue characterization. This is important for the cardiac morphological and functional evaluation, for the etiologic diagnosis and for the prognostic assessment. This paper reviews the use of the CMR in the study of the Hypertrophic, Dilated, Restrictive, Arrhythmogenic and Non-Compaction Left Ventricular Cardiomyopathies, as well as in some systemic diseases with cardiac involvement. Using a wide variety of radiofrequencies pulses and gradient magnetic fields, cine dynamic imaging and paramagnetic contrast, the CMR stands out among other diagnostic techniques, overcoming some of their limitations and becoming a gold standard method for the approach of the Cardiomyopathies.
The Cardiomyopathies are a group of myocardial disorders, with structural and functional anomalies that, according to European Society of Cardiology, can be subclassified into clusters based on their specific phenotype. The Cardiovascular Magnetic Resonance (CMR) imaging is a modality that, through the application of radiofrequency pulses and signal detection, provides a high resolution tissue characterization. This is important for the cardiac morphological and functional evaluation, for the etiologic diagnosis and for the prognostic assessment. This paper reviews the use of the CMR in the study of the Hypertrophic, Dilated, Restrictive, Arrhythmogenic and Non-Compaction Left Ventricular Cardiomyopathies, as well as in some systemic diseases with cardiac involvement. Using a wide variety of radiofrequencies pulses and gradient magnetic fields, cine dynamic imaging and paramagnetic contrast, the CMR stands out among other diagnostic techniques, overcoming some of their limitations and becoming a gold standard method for the approach of the Cardiomyopathies.
Descrição
Trabalho Final do Curso de Mestrado Integrado em Medicina, Faculdade de Medicina, Universidade de Lisboa, 2017
Palavras-chave
Miocardiopatia Ressonância magnética cardíaca Diagnóstico Prognóstico
