Reference Range of Embryo Volume by 3-D Sonography Using the XI VOCAL Method at 7 to 10+6 Weeks of Pregnancy

Reference Range of Embryo Volume by 3-D Sonography Using the XI VOCAL Method at 7 to 10+6 Weeks of Pregnancy

Author Araujo Junior, Edward Autor UNIFESP Google Scholar
Machado Nardozza, Luciano Marcondes Autor UNIFESP Google Scholar
Rolo, Liliam Cristine Autor UNIFESP Google Scholar
Nowak, Paulo Martin Autor UNIFESP Google Scholar
Bortoletti Filho, Joao Autor UNIFESP Google Scholar
Moron, Antonio Fernandes Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract 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.
Keywords First trimester of pregnancy
embryo
volume measurement
three-dimensional ultrasonography
nomogram
Language English
Date 2010-06-01
Published in American Journal of Perinatology. New York: Thieme Medical Publ Inc, v. 27, n. 6, p. 501-505, 2010.
ISSN 0735-1631 (Sherpa/Romeo, impact factor)
Publisher Thieme Medical Publ Inc
Extent 501-505
Origin http://dx.doi.org/10.1055/s-0030-1247607
Access rights Closed access
Type Article
Web of Science ID WOS:000278013400011
URI http://repositorio.unifesp.br/handle/11600/32603

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