Confiabilidade da análise qualitativa da ressonância magnética do encéfalo em prematuros extremos

Furtado, Andre D.; Pinto, Marcus Vinicius; Rangel, Cláudio de Carvalho; Cruz, Luiz Celso Hygino da; Lopes, José M. A.; Carvalho, Manoel de; Cabral, Jofre Antônio Oliveira; Domingues, Romeu Côrtes; Gasparetto, Emerson L.

doi:10.1590/s0100-39842010000600008

Cited by 3 publications

(3 citation statements)

References 22 publications

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“…However, considering the inherent method limitations, continuity of improvements should still be encouraged in the search for excellence in early diagnosis, in order to highlight novel technologies to supplement the assessment of the uterine contents. In this context, a wide availability of fetal magnetic resonance imaging for the study population has been sought in order to allow additional diagnostic findings, as reported in the literature (32,33) .…”

Section: Discussionmentioning

confidence: 99%

Malformações do sistema nervoso central e malformações associadas diagnosticadas pela ultrassonografia obstétrica

et al. 2012

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Objective: To identify and evaluate the prevalence of congenital central nervous system (CNS) malformations and associated defects diagnosed by obstetric ultrasonography. Materials and Methods: Observational, descriptive, crosssectional study developed in an institution of reference for high-risk pregnancies. Results: Congenital CNS malformations without other associated defects were present in 65.78% of cases, as follows: hydrocephalus (37.5%), myelomeningocele (15%), encephalocele (12.5%), corpus callosum agenesis (12.5%), anencephaly (12.5%), holoprosencephaly (7.5%), Dandy-Walker (7.5%), Arnold-Chiari (5.0%), hydranencephaly (5.0%), meningocele (5.0%), arachnoid cyst (2.5%). Congenital malformations of other systems were associated with such malformations, as follows: craniofacial (73.9%), orthopedic (65.2%), cardiovascular (34.8%), genitourinary (30.4%), gastrointestinal (30.4%), respiratory (8.7%), syndromic (8.7%), ophthalmologic (4.3%). The sonographic sensitivity in the study of CNS malformations was 79.4%. The rate of false-negative results was 20.5%. Oligohydramnios, present in 25% of false-negative studies, stands out among the quantifiable limitations. Conclusion: Obstetric ultrasonography presents good sensitivity in the screening for fetal CNS malformations, specially with the constant improvement and control of specialized methods such as Doppler and volumetric ultrasonography (3D/4D), contributing to consolidate its role as a modality of choice in this routine. Magnetic resonance imaging may play a supplementary role, providing information for an even better perinatal care. Keywords: Congenital malformations; Central nervous system malformations; Associated malformations; Ultrasonography.Objetivo: Identificar a prevalência de malformações congênitas do sistema nervoso central (SNC) e malformações associadas diagnosticadas pela ultrassonografia obstétrica. Materiais e Métodos: Estudo observacional, transversal, descritivo, em instituição de referência para gestações de alto risco. Resultados: Malformações congênitas do SNC estiveram presentes sem outras malformações associadas em 65,78%, com a distribuição: hidrocefalia (37,5%), mielomeningocele (15%), encefalocele (12,5%), agenesia de corpo caloso (12,5%), anencefalia (12,5%), holoprosencefalia (7,5%), Dandy-Walker (7,5%), Arnold-Chiari (5,0%), hidranencefalia (5,0%), meningocele (5,0%), cisto aracnoideo (2,5%). Malformações congênitas de outros sistemas estiveram associadas às do SNC: craniofacial (73,9%), ortopédica (65,2%), cardiovascular (34,8%), geniturinária (30,4%), gastrintestinal (30,4%), respiratória (8,7%), sindrômica (8,7), oftalmoló-gica (4,3%). A sensibilidade ultrassonográfica no estudo de malformações fetais do SNC foi 79,4%. A taxa de falso-negativos foi 20,5%. Dentre as limitações quantificáveis destaca-se o oligodrâmnio, presente em 25% dos falso-negativos. Conclusão: A ultrassonografia obstétrica possui boa sensibilidade no rastreio de malformações fetais do SNC, em especial com o aperfeiçoamento constante e domínio na utiliz...

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Section: Discussionmentioning

confidence: 99%

Malformações do sistema nervoso central e malformações associadas diagnosticadas pela ultrassonografia obstétrica

et al. 2012

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“…However, such imaging technique is performed through the anterior fontanelle, which results in a narrow field of view. Additionally, US is not sufficiently accurate to evaluate diffuse or subtle lesions, particularly those located in the white matter (16,17) . The early utilization of color Doppler in preterm neonates is important to detect brain lesions and to define the prognosis.…”

Section: Editorialmentioning

confidence: 99%

“…Brain MRI is more sensitive and specific than US in the detection of hemorrhages, ischemia and white matter lesions. However, in severe cases, technical difficulties of the method should be taken into consideration as compared with US that, besides its bedside capability, is easy to perform (15)(16)(17)(18) . The diagnosis of the anomalies of the fetal brain represents a factor of extreme distress for parents and a huge challenge for the clinical team in the pre-and postnatal counselling.…”

Section: Editorialmentioning

confidence: 99%

Avaliação do sistema nervoso central do feto e neonato

Werner

2012

Radiol Bras

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EDITORIALCentral nervous system (CNS) malformations play a relevant role in the set of all fetal malformations, standing out for the following factors:• incidence: this is the second highest after cardiac malformations; • feasibility of prenatal diagnosis: currently, they are the most frequently diagnosed malformations, together with urinary tract malformations; • difficulty in evaluating the patient's prognosis: many times, a multidisciplinary discussion is required to define the prognosis. Ultrasonography (US) is the best screening method to identify fetal CNS malformations (1). The echographic study of the cephalic pole at the 12th gestational week already constitutes a relevant biometric method for evaluating the gestational age. It also provides an early morphological appreciation of the development of the brain and of the fetus as a whole, together with other parameters, such as fetal dynamics (tonus, respiratory motion, heartbeats) and structural elements of the fetus (spine, skeleton, face, thorax and abdomen)(1) .A good echographic study depends on several factors, such as positioning, fetal mobility and growth, volume of amniotic fluid, position of the placenta, maternal wall, quality of the apparatus, and the sonographer's experience.Three-dimensional US (3DUS) has become an integral part in the assessment of a great number of fetal abnormalities. As conventional US and 3DUS are compared in the evaluation of medullary canal malformations, multiplanar 3DUS imaging provides more complete information on such alterations. Among others, the following benefits from this imaging modality are highlighted:0100-3984 © Colégio Brasileiro de Radiologia e Diagnóstico por Imagem

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Preterm and writhing movements: is it possible to predict fidgety movements in preterm infants?

et al. 2021

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Confiabilidade da análise qualitativa da ressonância magnética do encéfalo em prematuros extremos

Cited by 3 publications

References 22 publications

Malformações do sistema nervoso central e malformações associadas diagnosticadas pela ultrassonografia obstétrica

Malformações do sistema nervoso central e malformações associadas diagnosticadas pela ultrassonografia obstétrica

Avaliação do sistema nervoso central do feto e neonato

Preterm and writhing movements: is it possible to predict fidgety movements in preterm infants?

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