Real-time 3D using a matrix transducer is a feasible, reliable and valid method for volume determination in the fetus beyond 19 weeks of gestation. If compared to 2D, real-time 3D echocardiography provides improved accuracy of cardiac volumetry, decreases intraobserver and interobserver variability and is a promising tool for the accurate assessment of cardiac size and function.

3D freehand reconstruction has significantly lower visualization rates and overall accuracy compared to 2D and RT-3D. RT-3D echo is a feasible and reliable method for imaging the fetal heart. Offering the opportunity of data post-processing and evaluation, RT-3D is a promising method for improving the accuracy of sonographic analysis of fetal cardiac morphology and function.

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