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The anatomy scan is a detailed ultrasound examination done during pregnancy, usually between 18 and 22 weeks. It checks your baby’s body structures, growth, and the placenta and amniotic fluid. It is also called the mid-pregnancy scan.
Key facts
Yes, this scan is a standard part of prenatal care in many countries, including the UK, where the NHS offers it to all pregnant women.
The anatomy scan is for anyone who is pregnant and wants a detailed check of their baby’s development. It is usually offered to all pregnant women as part of routine antenatal care.
The anatomy scan is performed by a trained sonographer using an ultrasound machine. You lie on a bed and a gel is applied to your belly. A small handheld device (probe) is moved over your abdomen to create images of your baby on a screen.
The scan takes about 20 to 30 minutes. It is not painful, but you may feel a little pressure. The sonographer will look at your baby’s organs and measure parts of the body. You can usually take a partner or support person. You will be told the results on the day or soon after.
The anatomy scan itself is not a treatment. If the scan finds a problem, your healthcare team will discuss the next steps with you. These may include further tests, monitoring, or referral to a specialist.
If the scan detects a condition, treatment depends on the specific problem. Options may include additional scans, blood tests, genetic testing, or consultation with a fetal medicine specialist. Your doctor will explain all possible options.
Surgery is not a usual part of the anatomy scan. In rare cases where a serious condition is found, surgery may be considered after birth, or sometimes during pregnancy in specialised centres. Your healthcare team will guide you.
After your anatomy scan, you can continue with your daily life as normal. If results are reassuring, there is nothing extra to do. If further checks are needed, your team will support you.
No special diet or exercise changes are needed because of the scan. Follow general pregnancy advice: eat a variety of foods, take folic acid if advised, and do moderate exercise like walking or swimming.
Waiting for scan results can cause anxiety. If results are unexpected, worry is normal. Talk to your midwife, doctor, or a counsellor. You are not alone.
The anatomy scan does not prevent conditions – it detects them early. Some birth defects cannot be prevented, but maintaining a healthy lifestyle during pregnancy can reduce some risks.
Vaccinations during pregnancy, such as flu and whooping cough, are recommended to protect you and your baby, but they do not relate directly to the anatomy scan.
The anatomy scan itself is a screening test. Other screening tests, such as blood tests earlier in pregnancy, can also check for certain conditions.
For the vast majority of pregnancies, the anatomy scan shows that the baby is developing well. If a problem is found, many conditions can be managed or treated, and support is available. Your healthcare team will help you plan the best care for you and your baby.
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 8, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.