How many ultrasound scans can I expect through the NHS?
Hospitals in England offer at least 2 ultrasound scans during pregnancy:
- around 11 to 14 weeks
- between 18 and 21 weeks.
The first scan is called the 12-week scan, also called the dating scan. The sonographer estimates when your baby is due – the estimated date of delivery (EDD) – based on your baby's measurements.
The dating scan can include a nuchal translucency (NT) scan, which is part of the combined screening test for Down's syndrome, if you choose to have this screening.
The scan will also confirm whether you’re expecting more than one baby, that your baby is growing in the right place, as well as your baby’s development. It can also detect some health conditions, such as spina bifida.3
The second scan is the 20-week screening scan and is sometimes called the anomaly scan or mid-pregnancy scan. This scan checks if your baby could have a condition that affects their health and development. It checks for signs of 11 conditions:
- anencephaly
- open spina bifida
- cleft lip and palate
- diaphragmatic hernia
- gastroschisis
- exomphalos
- serious cardiac abnormalities
- bilateral renal agenesis
- severe skeletal dysplasia
- Edwards' syndrome (trisomy 18)
- Patau's syndrome (trisomy 13).4
Some conditions can be seen more clearly than others, so the scan might not find everything. But screening is the best way to find any conditions and helps you and your doctors to make the best decisions for you and your baby.4
Your sonographer will be able to tell you the results of your scan at the time. You may be offered more than 2 scans, depending on your health and the pregnancy.
Further information on what to expect during your scans can be found on the NHS website.
Additional needs
If you have special health needs, your midwife, GP, or obstetrician may take shared responsibility for your maternity care.
Let your midwife know if you have a disability that means you have special requirements for your antenatal appointments or for labour.
If you don’t speak English, flag this with your midwife also.