nuchal translucency scanning

nuchal translucency scanning
= NT scanning
an ultrasound screening test performed during pregnancy at 11 weeks of gestation that measures the maximum thickness of the translucency between the skin and the soft tissue overlying the cervical (neck) region of the spine of the fetus. Increased NT is associated with an increased risk of chromosomal abnormalities and of a wide variety of structural abnormalities (e.g. heart defects).

The new mediacal dictionary. 2014.

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  • NT scanning — nuchal translucency scanning …   The new mediacal dictionary

  • Nuchal scan — A nuchal scan is a sonographic prenatal screening scan (ultrasound) to help identify higher risks of chromosomal defects including Down s syndrome in a fetus, particularly for older women who have higher risks of such pregnancies. High thickness… …   Wikipedia

  • cystic hygroma — a collection of fluid behind the neck of a fetus, occasionally extending laterally to involve the sides of the neck (see hydrops fetalis). In its mildest form it is evidenced by an increased nuchal translucency (see nuchal translucency scanning) …   The new mediacal dictionary

  • ultrasound marker — the appearance, on ultrasonography of a pregnant woman, of a feature suggesting an abnormality in the fetus. Such markers can be classified as major fetal structural abnormalities or minor ultrasound features called soft markers. The latter are… …   The new mediacal dictionary

  • prenatal screening — screening tests carried out to estimate the risk of chromosomal or other abnormalities being present in a developing fetus. They include blood tests to measure levels of human chorionic gonadotrophin (hCG), PAPP A, alpha fetoprotein (AFP), and… …   The new mediacal dictionary

  • Down's syndrome — Down syndrome a condition resulting from a chromosomal abnormality most commonly due to the presence of three copies of chromosome 21 (trisomy 21), which is most likely to occur with advanced maternal age. Down s syndrome can also occur as a… …   The new mediacal dictionary

  • Edwards' syndrome — a condition resulting from a genetic abnormality in which an extra chromosome is present – there are three no. 18 chromosomes instead of the usual two. Affected babies, who rarely survive, have a characteristic abnormally shaped head, low birth… …   The new mediacal dictionary

  • Obstetric ultrasonography — Intervention Obstetric sonogram of a fetus at 16 weeks. The bright white circle center right is the head, which faces to the left. Features include the forehead at 10 o clock, the left ear toward the center at 7 o clock and the right hand… …   Wikipedia

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