NUCHAL TRANSLUCENCY
Nuchal translucency (NT) measurement is a screening test performed with
sonogram between 10-14 weeks, measuring the fetal fluid collection behind the
neck.
A thickened NT increases the likelihood of aneuploidy and cardiac disease.
It is combined with two maternal blood tests (free β-hCG & PAPP-A) in first-
trimester screening to increase the sensitivity and specificity for aneuploidy
screening.http://ebookobgyne.net