1. Amniotic fluid volumetry by three-dimensional ultrasonography during the first trimester of pregnancy.
- Author
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Gadelha PS, Da Costa AG, Filho FM, and El Beitune P
- Subjects
- Female, Fetal Development, Gestational Age, Humans, Pregnancy, Pregnancy Trimester, First, Prospective Studies, Reference Values, Amniotic Fluid diagnostic imaging, Image Processing, Computer-Assisted, Imaging, Three-Dimensional, Ultrasonography, Prenatal methods
- Abstract
In a longitudinal prospective study, we quantitated the amniotic fluid volume (AFV) of 25 normal fetuses by endovaginal 3-D ultrasonography (3D-US) from the 8th to the 11th week of pregnancy. AFV by 3D-US was obtained by subtracting the volumetric measurement of the embryo (EV) from the amniotic sac volume (ASV). EV and ASV were obtained by virtual organ computer-aided analysis (VOCAL), using 6 degrees of rotation. AFV increased from 5.75 to 42.96 cm(3) from the 8th to the 11th week (ANOVA, p < 0.05), with a correlation between gestational age and AFV (p < 0.001, r(2) = 98.1%). We conclude that there was an increase in AFV assessed by 3D-US. The AFV values for normal fetuses can be used for comparison with those detected in pregnancies with risk of fetal loss.
- Published
- 2006
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