OC160: Three‐dimensional ultrasonography is of limited value in diagnosing fetal spina bifida

Abstract

Oral communication abstractsprovided clinically/prognostically important information in five cases and additional clinically irrelevant information in four. In the former group, the ultrasound diagnoses were: MCM + inferior vermis defect (MRI: isolated MCM), hydrocephalus + partial ACC (MRI: hydrocephalus), borderline ventriculomegaly + craniosynostosis + hemimegalencephaly (MRI: borderline ventriculomegaly), hypoplasia of the CC splenium (MRI: normal CC) and corpus callosum lipoma (MRI: + lissencephaly). Overall, the prognosis of the lesion was changed by the MRI examination in 5/92 cases (5.4%), while it increased the confidence of the diagnosis in 21/92 cases (22.8%). Conclusions: Expert neurosonography is able to reach a conclusive diagnosis in most CNS abnormalities referred to a tertiary center. The use of MRI as a second-line diagnostic procedure has a specific place in the evaluation of selected fetal anomalies, following specific queries raised by the expert neurosonologist. OC159Three-dimensional ultrasound in examination of the fetal head: its role in basic and advanced examination of the fetal brain during the second trimester

Comparison of Two- and Three-dimensional Ultrasonography in the Evaluation of Lesion Level in Fetuses with Spina Bifida

“…These studies claim that three-dimensional ultrasonography is a complementing methodology and does not replace two-dimensional ultrasonography. 18,19 Our findings are concordant with these studies. No significant differences were observed between these methodologies.…”

“…Three-dimensional ultrasonography has been described as an important adjuvant method for assessing numerous fetal malformations, but its superiority to two-dimensional ultrasonography with regard to the diagnosis of the injury level in fetuses with spina bifida is controversial. [16][17][18][19][20] The absence of conclusive data in relation to the comparison between two-and three-dimensional ultrasonography in the evaluation of injury level in cases of spina bifida motivated us to conduct this study.…”

Diagnostic Accuracy of Ultrasound in Detection of Spina Bifida in the First and Second Trimester Using Post-Natal MRI as Gold Standard

“…Although 3D ultrasonography has been hailed as an invaluable adjunctive tool for assessing a wide range of prenatal abnormalities, whether or not it is more accurate than 2D ultrasonography for determining the extent of harm in a foetus with spina bifida remains debatable [29][30][31][32][33]. In this study, I used postnatal MRI as the gold standard to evaluate the diagnostic accuracy of ultrasound for detecting spina bifida in the first and second trimesters of pregnancy.…”

Precisão da ultra-sonografia bidimensional convencional e da ultra-sonografia tridimensional na avaliação do nível da lesão em fetos com espinha bífida aberta

“…Esses estudos afirmam ser a ultra-sonografia tridimensional uma metodologia complementar à ultra-sonografia bidimensional (Blaas et al, 2000;Lee et al, 2002;Carletti et al, 2007 Aaronson et al (2003), compararam também a ultra-sonografia e a ressonância nuclear magnética em relação ao nível da lesão da espinha bífida e observam na ultra-sonografia uma concordância com o resultado pós-natal de 79% e na ressonância nuclear magnética de 82%, não havendo diferença estatística entre os dois métodos.…”