Nuchal Translucency Scan: Complete Guide to 11-14 Week Screening
The nuchal translucency (NT) scan is a specialized first-trimester ultrasound examination performed between 11 and 14 weeks gestation that measures the fluid-filled space at the back of the fetal neck. This measurement, combined with maternal blood tests and maternal age, provides an accurate risk assessment for chromosomal abnormalities including Down syndrome (trisomy 21), Edwards syndrome (trisomy 18), and Patau syndrome (trisomy 13). This comprehensive guide explains what the NT scan measures, optimal timing, interpretation of results, accuracy, limitations, and what expectant parents should know about this critical first-trimester screening test.
nuchal translucency scan
nt scan
