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  • Title: Efficacy of fetal thigh volumetry in predicting birth weight using the virtual organ computer-aided analysis (VOCAL) technique.
    Author: Park J, Kim TH, Lee HH.
    Journal: Clin Exp Obstet Gynecol; 2015; 42(6):757-62. PubMed ID: 26753480.
    Abstract:
    OBJECTIVES: The present study was conducted to compare the accuracy of formulas used to calculate fetal thigh volume (FTV) using the virtual organ computer-aided analysis (VOCAL) technique with two-dimensional (2D) in formulas predicting birth weight. MATERIALS AND METHODS: This was a prospective, cross-sectional study of 84 pregnant women with 72 hours of delivery evaluated at a university hospital between May, 2008 and April, 2010. After 2D ultrasounds (US) measurement, 3DUS was also used to determine FTV with estimates computed using the VOCAL program. RESULTS: The correlation between fetal weight predicted by the 3D equation of FTV and the actual birth weight was significant. While FTV and the Hadlock II equation exhibited a low sensitivity for detection of low-birth-weight infants, FTV was a more sensitive method of detecting high-birth-weight infants than the Hadlock II equation. CONCLUSIONS: It is clear that using 3DUS-VOCAL to measure FTV provides more accurate estimation of fetal birth weight.
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