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dc.contributor.authorBarra, Daniela A.
dc.contributor.authorLima, Jailson C.
dc.contributor.authorMauad Filho, Francisco
dc.contributor.authorAraujo Junior, Edward [UNIFESP]
dc.contributor.authorMartins, Wellington P.
dc.date.accessioned2016-01-24T14:34:22Z
dc.date.available2016-01-24T14:34:22Z
dc.date.issued2013-09-01
dc.identifierhttp://dx.doi.org/10.1016/j.ultrasmedbio.2013.02.003
dc.identifier.citationUltrasound in Medicine and Biology. New York: Elsevier B.V., v. 39, n. 9, p. 1552-1559, 2013.
dc.identifier.issn0301-5629
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/36722
dc.description.abstractOur aim was to determine whether rotating the fetus over its largest axis and reducing the rotational step angle can improve reliability/agreement of fetal volume measurements obtained with three-dimensional ultrasonography (3-DUS). Two observers acquired three 3-DUS data sets for a fetus with a crown-rump length between 45 and 84 mm. These observers determined the fetal volume using virtual organ computer-aided analysis (VOCAL), by three different methods, with a rotational step angle of 30 degrees: (1) minimal manipulation of the 3-DUS data set, fetus rotated over any axis; (2) manipulation of the 3-DUS data set until the fetus could be seen in a standardized manner, fetus rotated over its anteroposterior axis; (3) same 3-DUS data set manipulation, fetus rotated over its longitudinal axis. Intra- and inter-observer reliability/agreement was determined with intra-class correlation coefficients and limits of agreement. in addition, we tested the method that provided the best reliability/agreement results using 15 degrees and 9 degrees of rotational step angles. the time taken to manipulate 3-DUS and determine fetal volume was recorded. the best intra- and inter-observer reliability/agreement results were observed when the fetus was rotated over its longitudinal axis. Reducing rotational step angle to 15 degrees or 9 degrees did not further improve reliability/agreement. the observer took approximately 1 min to determine fetal volume using this method. Our findings indicate that fetal volume should be determined by rotating the fetus over its longitudinal axis, at a rotational step angle of 30 degrees, which is relatively fast and allows analysis of fetal volume with good reliability and agreement. (E-mail: wpmartins@gmail.com) (c) 2013 World Federation for Ultrasound in Medicine & Biology.en
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipHospital das Clinicas de Ribeirao Preto, Brazil
dc.description.sponsorshipUniversidade de São Paulo (USP), Brazil
dc.description.sponsorshipUniversidade Federal de São Paulo (UNIFESP), Brazil
dc.description.sponsorshipEscola de Ultrassonografia e Reciclagem Medica Ribeirao Preto, Brazil
dc.format.extent1552-1559
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofUltrasound in Medicine and Biology
dc.rightsAcesso restrito
dc.subjectUltrasonographyen
dc.subjectGestational ageen
dc.subjectThree-dimensional imagingen
dc.subjectReproducibility of resultsen
dc.titleMEASURING FETAL VOLUME DURING LATE FIRST TRIMESTER BY THREE-DIMENSIONAL ULTRASONOGRAPHY USING VIRTUAL ORGAN COMPUTER-AIDED ANALYSISen
dc.typeArtigo
dc.rights.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUltrasonog & Retraining Med Sch Ribeirao Preto EU
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.description.affiliationUniv São Paulo DGO FMRP USP, Med Sch Ribeirao Preto, Dept Obstet & Gynecol, Ribeirao Preto, Brazil
dc.description.affiliationUltrasonog & Retraining Med Sch Ribeirao Preto EU, Ribeirao Preto, Brazil
dc.description.affiliationSão Paulo Fed Univ UNIFESP, Dept Obstet, São Paulo, Brazil
dc.description.affiliationUnifespSão Paulo Fed Univ UNIFESP, Dept Obstet, São Paulo, Brazil
dc.identifier.doi10.1016/j.ultrasmedbio.2013.02.003
dc.description.sourceWeb of Science
dc.identifier.wosWOS:000324052300005


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