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• W2740388865 abstract "OBJETIVO: Avaliar a reprodutibilidade interobservador dos indices de vascularizacao do Doppler de ampli-tude tridimensional (Doppler de amplitude 3D) no primeiro trimestre de gestacao. MATERIAIS E METODOS:Realizou-se estudo de reprodutibilidade com 32 gestantes normais entre 7 e 10 semanas e 6 dias. Para ocalculo do volume tridimensional dos embrioes utilizou-se o metodo VOCAL (Virtual Organ Computer-aidedAnaLysis) com ângulo de rotacao de 12°. Em seguida obtiveram-se, automaticamente, os tres indices vas-culares do Doppler de amplitude 3D: indice de vascularizacao (VI), indice de fluxo (FI) e indice de vascula-rizacao e fluxo (VFI). Para o calculo da variabilidade interobservador, um examinador realizou uma segundamedida dos 32 embrioes e um segundo examinador realizou uma terceira medida dos mesmos volumes, ambosdesconhecendo os resultados do outro. Utilizaram-se, para analise estatistica, o coeficiente de correlacaointraclasse (CCI) e graficos de Bland-Altman. RESULTADOS: Observou-se boa reprodutibilidade interobser-vador dos tres indices vasculares. O VI apresentou CCI = 0,9 e media da diferenca = –1,1; o FI apresentouCCI = 0,9 e media da diferenca = –0,5; e o VFI apresentou CCI = 0,9 e media da diferenca = –1,1. CON-CLUSAO: Os indices vasculares do Doppler de amplitude 3D do embriao no primeiro trimestre de gestacaoforam altamente reprodutiveis, em especial o FI.Unitermos: Primeiro trimestre de gestacao; Ultrassonografia color Doppler; Reprodutibilidade dos resulta-dos; Imagem tridimensional.OBJECTIVE: To evaluate the interobserver reproducibility of vascular indices obtained with three-dimensionalpower Doppler (3D power Doppler) ultrasonography at the first trimester of gestation. MATERIALS ANDMETHODS: The present reproducibility study involved 32 healthy pregnant women with 7 to 10 weeks and6 days of gestation. The VOCAL (Virtual Organ Computer-aided AnaLysis) method was utilized to calculateembryos volume, with a 12° rotational angle. Subsequently, the software automatically displayed three 3Dpower Doppler vascular indices: vascularization index (VI), flow index (FI) and vascularization and flow index(VFI). In order to calculate the interobserver variability, an investigator performed a second blind measurementof the 32 embryos, and another investigator performed a third blind measurement of the same volumes. Theinterclass correlation coefficient (ICC) and Bland-Altman plots were utilized for statistical analysis. RESULTS:A good interobserver reproducibility was observed in relation to the three vascular indices. The VI presentedICC = 0.9 and mean difference between measurements = –1.1. For the FI, the ICC was 0.9 and meandifference = –0.5. The VFI presented ICC = 0.9 and mean difference = –1.1. CONCLUSION: The vascularindices, particularly the FI, obtained with 3D power Doppler ultrasonography at the first trimester of gestationdemonstrated a high reproducibility.Keywords: First trimester of gestation; Color Doppler ultrasonography; Reproducibility of results; Three-di-mensional imaging." @default.
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• W2740388865 date "2010-01-01" @default.
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• W2740388865 title "Reprodutibilidade interobservador dos índices vasculares do Doppler de amplitude tridimensional do embrião entre 7 e 10 semanas e 6 dias de gestação* Interobserver reproducibility of vascular indices obtained with three-dimensional power Doppler ultrasonography of embryos at 7 to 10 weeks and 6 days of gestation" @default.
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