P51.11: the Practical Use of 3D Rendering for Routine Screening of the Fetal Spine

by subtracting the embryo volume from the gestational sac volume. If the amniotic cavity was visualized, the embryo volume was subtracted from it to obtain the amniotic fluid volume. Regression analysis was used to determine correlation between gestational age and gestational amniotic volume. The level of significance was set at P < 0.05. Results: Amniotic fluid volume increased from 4.42 to 24.36 cc from the 7th to the 10th week (P < 0.05), using the VOCAL TM technique and there was a correlation between gestational age and gestational amniotic fluid volume in the range from the 7th to the 10th week (VLA =2.641×GESTATIONAL AGE2 – 38.285×GESTATIONAL AGE +143.06, r2 = 71.12%). Conclusion: We have demonstrated that the gestational amniotic fluid volume, using the VOCAL TM technique, increases in the first trimester. In addition, we showed that the higher the gestational age, the larger the amniotic fluid.