A 2D ultrasound is the standard procedure used during obstetric ultrasound. It is the one used to produce 2 dimensional images of what is happening inside the mothers and baby's body. Generally, all pregnancy ultrasounds are still done using 2D technology. The usual protocol for scanning in pregnancy are: - Dating and viability scan between 6 and 9 weeks. - Nuchal translucency (NT) scan sometimes called the early morphology scan between 11 and 13 weeks. - Anomaly scan (ultrasound level II) between 18 and 20 weeks. - Growth scan or fetal wellbeing scan between 28 and 32 weeks. - Growth scan and colour doppler(if indicated) studies between 36 and 40 weeks. Kindly do the scan as directed by your obstetrician.