OP09. 05: The use of inversion mode and ‘3D manual segmentation’in volume measurement of fetal fluid-filled structures: a comparison with VOCAL™ Academic Article uri icon


  • Objective Volume measurements by three-dimensional (3D) ultrasound have been reported to be more accurate than those performed by two-dimensional (2D) ultrasound, in particular of irregular anatomic structures. The purpose of this study was to compare three techniques for volume measurement, as well as the inter-and intra-observer agreements for volume measurement of fetal fluid-filled structures. Methods 3D volume datasets of 29 stomachs and 21 bladders were acquired from 50 fetuses. Volume measurements were performed independently by two observers using the following techniques: 1) VOCAL™; 2) inversion mode; and 3)'manual segmentation'. Reliability of these methods was evaluated using intraclass correlation. Bland-Altman plots were generated to examine bias and agreement. The time required to complete the measurements was compared using ANOVA with post …

publication date

  • January 1, 2006