A "3 month scan" in pregnancy typically refers to the Nuchal Translucency (NT) scan, which is performed to assess the baby's development and screen for certain chromosomal abnormalities.
Understanding the Nuchal Translucency (NT) Scan
The NT scan, often called the "3 month scan", is usually conducted between 11 weeks and 13 weeks and 6 days of pregnancy. Its primary purpose is to:
- Examine the baby's structural development.
- Screen for chromosomal abnormalities, such as Down syndrome.
What the NT Scan Looks For
During the NT scan, the sonographer measures the clear (translucent) space at the back of the baby's neck. This measurement, combined with other factors like the mother's age and blood tests, helps to estimate the risk of chromosomal abnormalities.
Key Aspects of the 3 Month Scan (NT Scan):
| Aspect | Description |
|---|---|
| Timing | 11 weeks to 13 weeks and 6 days of pregnancy |
| Purpose | Assess structural development and screen for chromosomal abnormalities (e.g., Down syndrome) |
| Procedure | Ultrasound to measure the nuchal translucency (fluid-filled space at the back of the baby's neck) |
| Additional Tests | Often combined with blood tests (e.g., maternal serum screening) to improve accuracy in assessing the risk factors. |
