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What is a Level 1 scan in pregnancy?

Published in Pregnancy Ultrasound Scan 1 min read

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.