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Abstract(s)
A ressonância magnética fetal é um método eficaz na avaliação pré-natal da morfologia normal do cérebro e no diagnóstico de patologias do sistema nervoso central, sendo um importante complemento clínico à ecografia. O cerebelo é uma das estruturas menos afetadas em casos de restrição de crescimento fetal, tornando-se um bom indicador na avaliação do desenvolvimento fetal e da idade gestacional. Deste modo, a avaliação biométrica fetal é fundamental no diagnóstico pré-natal do desenvolvimento
cerebral. Objetivo – Avaliação do diâmetro transversal do cerebelo (estrutura anatómica de referência do sistema nervoso central) do feto e posterior comparação com um estudo internacional reconhecido nesta matéria. Material e métodos – A amostra foi constituída por 84 gestantes que realizaram ressonância magnética fetal numa clínica de imagiologia médica da região Centro. A medição considerada para a avaliação do desenvolvimento fetal foi o diâmetro transversal do cerebelo. Resultados – Os resultados obtidos para o diâmetro transversal do cerebelo por ressonância magnética fetal vieram a demonstrar a ausência de diferenças médias estatisticamente significativas (p>0,05) em função do número de semanas de gestação, face aos valores teóricos aferidos no estudo de Garel. Conclusão – Com base nos resultados obtidos, para o diâmetro transversal do cerebelo podemos concluir que o parâmetro analisado é coerente com a publicação de Catherine Garel – Le développement du cerveau foetal atlas IRM et biometrie.
ABSTRACT: The fetal magnetic resonance imaging (MRI) is an effective method in the prenatal evaluation of normal brain morphology and diagnosis of diseases of the central nervous system. It is an important complement to clinical ultrasound. The cerebellum is one of the least affected structures in cases of fetal growth restriction, so it is a good index for evaluating the fetal development and gestational age. Thus, the biometric evaluation is essential in fetal prenatal diagnosis of brain development. Purpose – Evaluation of the transversal cerebellum diameter (the anatomical structures reference of fetal central nervous system) and compare it with an international reference study in this regard. Material and methods – The sample consisted of 84 pregnant women who have performed magnetic resonance in a medical imaging clinic in the Centre region. The average considered for evaluating the fetal development was the transversal cerebellum diameter. Results – The results for the transversal cerebellum diameter demonstrate the absence of statistically significant mean differences (p>0.05) in the number of weeks of gestation compared with theoretical values measured in the study by Garel. Conclusion – Based on the obtained results we can conclude that the parameter analyzed is consistent with the publication of Catherine Garel – Le développement du cerveau foetal atlas IRM et biometrie.
ABSTRACT: The fetal magnetic resonance imaging (MRI) is an effective method in the prenatal evaluation of normal brain morphology and diagnosis of diseases of the central nervous system. It is an important complement to clinical ultrasound. The cerebellum is one of the least affected structures in cases of fetal growth restriction, so it is a good index for evaluating the fetal development and gestational age. Thus, the biometric evaluation is essential in fetal prenatal diagnosis of brain development. Purpose – Evaluation of the transversal cerebellum diameter (the anatomical structures reference of fetal central nervous system) and compare it with an international reference study in this regard. Material and methods – The sample consisted of 84 pregnant women who have performed magnetic resonance in a medical imaging clinic in the Centre region. The average considered for evaluating the fetal development was the transversal cerebellum diameter. Results – The results for the transversal cerebellum diameter demonstrate the absence of statistically significant mean differences (p>0.05) in the number of weeks of gestation compared with theoretical values measured in the study by Garel. Conclusion – Based on the obtained results we can conclude that the parameter analyzed is consistent with the publication of Catherine Garel – Le développement du cerveau foetal atlas IRM et biometrie.
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Keywords
Ressonância magnética Ressonância magnética fetal Cerebelo Biometria Diâmetro transversal Magnetic resonance Fetal magnetic resonance Cerebellum Biometry Transversal diameter MRI
Citation
Farinha C, Tavares O. Desenvolvimento e mensuração do diâmetro transversal do cerebelo fetal por ressonância magnética. Saúde & Tecnologia. 2014;(T2):e39-42.