This presentation will focus on the use of 3D/4D ultrasound to evaluate the fetal heart. The content includes the following topics: (1) review of the differences between 3D and 4D STIC, (2) evaluation of the outflow tracts using the "spin" technique, (3) use of the invert mode, (4) discussion of "b-flow" technology, (5) discussion of tomographic ultrasound imaging, and (6) presentation of cardiac anomalies using the above technologies.