Navegando por Palavras-chave "Three-Dimensional Ultrasound"
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- ItemSomente MetadadadosAntenatal diagnosis of a large immature abdominal wall teratoma by 2d-3d ultrasound using hdlive and magnetic resonance imaging(Via Medica, 2016) Werner, Heron; Mocarzel, Carolina; Sa, Renato Augusto; Tonni, Gabriele; Novoa y Novoa, Victoria Arruga [UNIFESP]; Avvad-Portari, Elyzabeth; Bonasoni, Paola; Araujo Junior, Edward [UNIFESP]We describe the first case of prenatally detected teratoma of the fetal abdomen wall using ultrasound and fetal magnetic resonance imaging (MRI). A heterogeneous mass, partly solid and cystic, originating from the anterior abdominal wall of the fetus close to an omphalocele sac was detected by means of 2D/3D ultrasound and MRI. Amniodrainage was performed and due to sign of impending fetal risk, an emergency Cesarean section was performed. A bulky, crumbly and bleeding tumoral mass was confirmed at delivery. Ligation of the supplying artery to the tumor was complicated by uncontrollable hemorrhage and early neonatal death. Pathology identified the tumor as an immature teratoma of the anterior fetal abdominal wall. 2D/3D ultrasound, especially using HDlive application and MRI demonstrated accurate detection and characterization of this congenital tumor.
- ItemSomente MetadadadosAvaliação Da Geometria Do Coração Fetal Durante A Gravidez Por Ultrassonografia Tridimensional Utilizando O Modo De Renderização Stic(Universidade Federal de São Paulo (UNIFESP), 2017-12-18) Bezerra, Marilim De Souza [UNIFESP]; Araujo, Edward [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)Objective: To determine fetal heart geometry during pregnancy according to the measurement of its internal angles using three-dimensional (3D) ultrasound and the spatio-temporal image correlation (STIC) rendering mode and to assess the intra and interobserver reproducibilities of the fetal heart angles. Methods: This prospective, cross-sectional study evaluated 250 normal singleton pregnancies from 20 to 33 weeks and 6 days of gestation. From the four chamber view, scanning was determined by the STIC and by rendering mode the measurements of eight angles of the fetal heart were evaluated, being: apex angle (AA), base angle (BA), mitral valve angle (MVA ), tricuspid valve angle (TVA), left ventricle angle (LVA), right ventricle angle (RVA), left atrium angle (LAA) and right atrium angle (RAA). For all angles, scatters plots were created according to gestacional age, with adjustments for the coefficient of determination (R2). The concordance correlation coefficient (CCC) was used for intra- and interobserver tests. Results: The average ± standard deviation for maternal age (years) and gestational age (weeks) was 31.7 ± 4.9 and 26.3 ± 4.2, respectively. There were little variation of fetal heart angles using STIC rendering according to the gestational age, with R2 values of 0.01 for the apex and mitral valve angles and <0.01 for the base, tricuspid valve, left ventricle, right ventricle, left atrium, and right atrium angles. Moderate/good intra- and interobserver concordance was observed for the measurement of fetal heart angles using STIC rendering, and the obtained CCC varied from 0.74 to 0.93. Conclusion: The fetal heart geometry did not present significant variations in its geometry during pregnancy using 3D ultrasound and the STIC rendering mode, with moderate/good intra- and interobserver reproducibility for its measurements.
- ItemAcesso aberto (Open Access)Avaliação da qualidade da ultrassonografia tridimensional mediante as técnicas Fast, Star e Five D-Heart no rastreamento das doenças cardíacas congênitas(Universidade Federal de São Paulo (UNIFESP), 2020-12-18) Carrilho, Milene Carvalho [UNIFESP]; Araujo Junior, Edward [UNIFESP]; Universidade Federal de São PauloObjective: To compare the quality of standard fetal echocardiographic views obtained by three-dimensional ultrasound with those obtained by the simple targeted arterial rendering (STAR) technique, four-chamber view swing technique (FAST), and fetal intelligent navigation echocardiography (FINE / 5D-Heart®) technique. Methods: This was a cross-sectional prospective study that included pregnant women between 22 and 34 weeks of gestation, with normal fetuses. Fetal heart volumes were acquired using spatio-temporal image correlation (STIC) with the fetal spine between 2 and 9 o’clock. The FAST/STAR techniques consist of the manipulation of STIC volumes by drawing OmniView® lines to obtain echocardiographic views. The FINE technique uses intelligent navigation to automatically generate echocardiographic views. The quality of the images was classified as excellent, good, acceptable, and unacceptable. The analysis was performed using the Bonferroni multiple-comparisons test. Results: The study included 101 pregnant women aged between 16 and 44 years (mean ± standard deviation of 32 ± 6.3) at a gestational age of 20 to 34 weeks (mean ± standard deviation of 26 ± 4.2). There was no mean difference in image quality between fetal spine positions in all views (p>0.05). However, in the five-chamber, left ventricular outflow tract, right ventricular outflow tract, ductal arch, superior vena cava/inferior vena cava, and abdomen/stomach views, there was a statistically significant mean difference between the techniques of reconstruction of the standard echocardiographic views, regardless of the spine position (p<0.05). The best mean image quality was obtained by the FINE technique. Conclusion: The quality of the echocardiographic views obtained using the FINE/5D-Heart® technique was superior to that of those generated by the FAST/STAR techniques in normal fetuses scanned between 20 and 34 weeks of gestation.