avaliação pré e pós-operatória da tetralogia de fallot por ressonância magnética magnetic resonance imaging pre- and postoperative evaluation of tetralogy of fallot

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ID: 130292
2004
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Abstract
A proposta deste trabalho foi estudar, prospectivamente, por ressonância magnética (RM), pacientes com diagnóstico de tetralogia de Fallot e avaliar a validade da RM como exame pré e pós-operatório nesses pacientes. Foram estudados, através de seqüências spin-eco e angiografia por RM (angio-RM) com utilização de gadolínio, 20 pacientes com idades entre 1 e 29 anos. Onze pacientes apresentavam a forma clássica da tetralogia de Fallot e nove, a forma extrema (tetralogia de Fallot com atresia pulmonar). O estudo permitiu a avaliação adequada da aorta, possibilitando a análise quanto à presença ou não de dilatação e quanto à posição do arco aórtico em todos os casos. Houve também uma excelente visualização das artérias pulmonares principal, direita e esquerda, possibilitando a avaliação qualitativa quanto à presença de dilatação, hipoplasia, estenose, ou quanto à ausência do vaso. Os resultados obtidos indicam que a RM, incluindo técnicas de angio-RM com meio de contraste, é um método de grande utilidade no estudo pré e pós-operatório de pacientes com tetralogia de Fallot, porque permite a obtenção de informações anatômicas importantes e complementares à ecocardiografia, podendo ser considerada uma alternativa ao cateterismo cardíaco, principalmente na avaliação da anatomia vascular pulmonar.
The purpose of this study was to assess the usefulness of magnetic resonance imaging (MRI) in the pre- and postoperative evaluation of patients with tetralogy of Fallot. Twenty patients aged 1 to 29 years were prospectively evaluated with black-blood and contrast-enhanced angiographic techniques, 11 with the classic form of tetralogy of Fallot and 9 with tetralogy of Fallot and pulmonary atresia. MRI studies provided adequate visualization of the aorta that was classified as dilated or not dilated, and definition of its position in all cases. The use of contrast-enhanced MR angiographic techniques provided excellent imaging of the main right and left pulmonary arteries. The results suggest that MRI, including contrast-enhanced angiography techniques, is a useful tool in the evaluation of patients with tetralogy of Fallot before and after cardiac surgery since it provides important anatomical information that is not always obtained with echocardiography. MRI can be considered an alternative to cardiac catheterization, particularly in the evaluation of the pulmonary vascular anatomy.
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Authors ;Renata Junqueira Moll Bernardes;Edson Marchiori;Paulo Manuel de Barros Bernardes;Maria Beatriz Albano Monzo Gonzaga;Luiz Carlos Simões
Journal india international conference on information processing, iicip 2016 - proceedings
Year 2004
DOI
10.1590/S0100-39842004000400007
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-39842004000400007
Keywords
Magnetic resonance imaging Children infants criança tetralogy of fallot congenital heart diseases nuclear medicine medical radiology

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