Navegando por Palavras-chave "Atrioventricular valves"

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    Comparison between multiplanar and rendering modes in the assessment of fetal atrioventricular valve areas by 3D/4D ultrasonography
    (Sociedade Brasileira de Cirurgia Cardiovascular, 2012-09-01) Araujo Júnior, Edward [UNIFESP]; Rolo, Liliam Cristine [UNIFESP]; Simioni, Christiane [UNIFESP]; Nardozza, Luciano Marcondes Machado [UNIFESP]; Rocha, Luciane Alves da [UNIFESP]; Martins, Wellington P.; Moron, Antonio Fernandes [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); University of São Paulo Faculty of Medicine of Ribeirão Preto Department of Obstetrics and Gynecology; School of Ultrasound and Medicine of Ribeirão Preto Recycling; National Institute of Science and Technology (INCT) of Hormones and Women's Health
    OBJECTIVE: To compare the agreement of multiplanar and rendering modes in the assessment fetal atrioventricular valves (mitral and tricuspid) areas by three-dimensional (3D) ultrasonography using the software spatio-temporal image correlation (STIC). METHODS: We conducted a prospective cross-sectional study with normal pregnant women, with single fetuses, between 18-33 weeks. To measure the areas, we used the plan of four-chamber view. In the case of multiplanar, the plane was rotated on the axis Z form the heart to position at 9h. For rendering, the green line (region of interest - ROI) was placed from the atria of the heart perpendicular to the crux. The agreement was assessed by a Bland-Altman (limits of agreement) using the relative difference between the measures: ((rendering mode) - (multiplanar mode)) / (average). RESULTS: 328 fetuses were evaluated. We have not identified the occurrence of systematic error between methods: the average relative difference was 1.62% (-2.07% to 5.32%, confidence interval 95%) in the mitral and 1.77% (- 1.08% to 4.62%) in the tricuspid valve. The limits of agreement between methods were -65.26% to 68.51% for the mitral and -49.91% to 53.45% for the tricuspid. CONCLUSIONS: There was no systematic error between modes and thus the observed values for the area of fetal atrioventricular valves can be used for comparisons needs to be corrected. However, relatively large variations may be observed when repeating the measurement area by different modes.