Table 1B.

Comparison of 3 Different Techniques for Calculating Fetal Cardiac Ventricular Volumes From STIC Data Sets Utilizing VOCAL

	Manual Trace 15°	Inversion Mode 15°	P	Contour Finder 15°	P
Overall	10.5 (8.7 – 12.5)	6.0 (4.9 – 7.2)	<0.001*	3.6 (3.0 – 4.2)	<0.001*
LVS	15.2 (10.6 – 20.8)	6.1 (3.2 – 9.9)	<0.01*	4.8 (3.6 – 6.3)	<0.001*†
LVD	9.0 (7.5 – 11.5)	6.5 (4.7 – 8.5)	ns*	2.5 (1.6 – 3.5)	<0.01*
RVS	13.1 (8.6 – 18.6)	5.9 (3.8 – 8.5)	<0.05*	4.0 (2.5 – 5.7)	<0.001*†
RVD	6.1 (3.7 – 8.9)	5.6 (3.9 – 7.6)	ns*	3.3 (2.2 – 4.8)	ns*

Values of agreement are expressed as mean percent CV (95% CI). Abbreviations are as in Table 1A.

^*Repeated measures analysis of variance with post hoc analysis

^†Significance only for Contour Finder versus Manual Trace