Pregnancy scans (or baby scans) have become the mainstay of fetal growth monitoring in the 21st century. UNFORTUNATELY, medical aids only pay for two scans even though we generally do far more than four in each antenatal care.
Our timing for fetal anomaly scan is between 18-22 weeks. 3D/4D is an accidental service when there are good factors to demonstrate fetal face between 28-32 weeks.