Obstetric Ultrasound is a technique used to observe the baby in the womb. An ultrasound scan is a clinical examination performed by a specially trained Sonographer or Doctor and usually takes about 15 minutes to perform. You will be offered a first scan at 11-14 weeks to date the pregnancy. This will give you an approximate date for when the baby will be born. A second scan will be offered at 19-20 weeks.
The purpose of this scan is to see if the baby appears normal. While major abnormalities will show up on scan, some problems may not be picked up.