A Level 1 scan in pregnancy, also known as the Ultrasound Level I NT/NB Scan, is an ultrasound examination typically performed between the 11th and 14th weeks of pregnancy. This scan is a standard part of prenatal care.
Key Aspects of a Level 1 Scan:
- Timing: Conducted during the first trimester, specifically between 11 to 14 weeks of gestation.
- Nuchal Translucency (NT) Measurement: A primary focus is measuring the nuchal fold thickness, which is the fluid-filled space at the back of the baby's neck.
- Purpose: The scan helps in assessing the risk of certain chromosomal abnormalities, such as Down syndrome.
Nuchal Translucency Explained:
- The nuchal translucency measurement is a key indicator.
- An increased NT measurement may suggest a higher risk of chromosomal abnormalities or other developmental issues.
- This measurement, combined with other factors like maternal age and blood tests, helps provide a more comprehensive risk assessment.
Summary:
The Level 1 scan is a crucial early ultrasound, primarily aimed at measuring the nuchal translucency to assess the risk of chromosomal abnormalities.