Navegando por Palavras-chave "volume measurement"

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    Comparison of gestational sac volume by 3D-sonography using planimetric, virtual organ computer-aided analysis and extended imaging virtual organ computer-aided analysis methods between 7 and 11 weeks of pregnancy
    (Taylor & Francis As, 2010-03-01) Machado Nardozza, Luciano Marcondes [UNIFESP]; Rolo, Liliam Cristine [UNIFESP]; Araujo Junior, Edward [UNIFESP]; Nowak, Paulo Martin [UNIFESP]; Bortoletti Filho, Joao [UNIFESP]; Moron, Antonio Fernandes [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Objective. To compare different three-dimensional (3D) methods in the assessment of gestational sac volume (GSV). Design. Cross-sectional study involving 74 normal pregnancies between 7 and 11 weeks. Setting. Department of Obstetrics, São Paulo Federal University (UNIFESP). Methods. GSV was measured through 3D ultrasound using the planimetric, virtual organ computer-aided analysis (VOCAL) and extended imaging virtual organ computer-aided analysis (XI VOCAL) methods. the planimetric method used a sequence of adjacent planes that are 3 mm thick. for the VOCAL methods, six adjacent planes and a 30 degrees rotation were used. A total of 15 adjacent planes were used for the XI VOCAL method. Regression models with a determination coefficient (R
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    Reference Range of Embryo Volume by 3-D Sonography Using the XI VOCAL Method at 7 to 10+6 Weeks of Pregnancy
    (Thieme Medical Publ Inc, 2010-06-01) Araujo Junior, Edward [UNIFESP]; Machado Nardozza, Luciano Marcondes [UNIFESP]; Rolo, Liliam Cristine [UNIFESP]; Nowak, Paulo Martin [UNIFESP]; Bortoletti Filho, Joao [UNIFESP]; Moron, Antonio Fernandes [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    We sought to establish normative data for three-dimensional ultrasound (3DUS) first-trimester embryonic volume using the extended imaging virtual organ computer-aided analysis (XI VOCAL) technique. This cross-sectional study involved 64 normal pregnancies at 7 to 10 + 6 weeks' gestation. Embryonic volume was obtained on 3DUS using the XI VOCAL technique with manual outline of 10 sequential planes. the mean, median, standard deviation, and maximum and minimum values were obtained for each week calculated. Polynomial regression models adjusted by the determination coefficient (R(2)) were created to assess the correlation between embryonic volume and gestational age (GA) and crown rump length (CRL). the intraclass correlation coefficient (ICC) was used to calculate inter-and intraobserver reproducibility. Mean embryonic volume went from 0.20 cm(3) (range 0.10 to 0.89 cm(3)) to 5.12 cm(3) (range 2.90 to 5.98 cm(3)). Embryonic volume was strongly correlated with GA (R(2) = 0.84) and with CRL (R(2) = 0.87). There was a good inter-and intraobserver reproducibility of embryonic volume with ICC = 0.999 and 0.995, respectively. Reference range for 3DUS first-trimester embryonic volume using the XI VOCAL technique were generated for pregnancies at 7 to 10 + 6 weeks, with high inter-and intraobserver reproducibility.