Nuchal translucency screening (NT screening) is a test performed during the first trimester of pregnancy to evaluate the risk of certain genetic conditions in the baby. It involves an ultrasound examination to measure the thickness of the fluid-filled space at the back of the baby's neck, known as the nuchal translucency. Increased thickness in this area may suggest a higher risk of chromosomal abnormalities such as Down syndrome or other conditions. The test is usually combined with a blood test to provide a more accurate risk evaluation. It is commonly offered to pregnant women as part of routine pregnancy care to help evaluate the baby's health and decide id further testing is necessary.

英語での「nuchal translucency screening」の定義と意味

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