- nuchal thickness scanning
- an ultrasound screening test performed during pregnancy at 10-14 weeks of gestation that looks specifically at the thickness of the skin at the back of the neck (the nuchal fold) of the fetus as an aid to the prenatal diagnosis of chromosomal defects. The thicker the nuchal fold, the higher the risk of the baby having a chromosomal defect. See also ultrasound marker.
Medical dictionary. 2011.
Look at other dictionaries:
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