"Adjusted risk for Trisomy 21: 1 in 4,200. Adjusted risk for Trisomy 18/13: 1 in 15,000."
For expectant parents, the first trimester of pregnancy is a whirlwind of excitement, anticipation, and sometimes, anxiety. Among the most critical milestones during this period (specifically between 11 and 14 weeks of gestation) is the nuchal translucency (NT) scan. This ultrasound measurement, which assesses the fluid-filled space at the back of a fetal neck, is a powerful, non-invasive tool for estimating the risk of chromosomal abnormalities such as Down syndrome (Trisomy 21), Edwards syndrome (Trisomy 18), and Patau syndrome (Trisomy 13). fetal medicine foundation nuchal translucency calculator
If you are an expectant parent, you may not have direct access to the calculator (as it is clinician-only). However, you can ask your sonographer the following questions to ensure the highest standard: "Adjusted risk for Trisomy 21: 1 in 4,200
The FMF NT calculator is widely used in clinical practice, and several professional organizations recommend its use as part of first-trimester screening for chromosomal abnormalities. Guidelines from organizations such as the American College of Obstetricians and Gynecologists (ACOG) and the Royal College of Obstetricians and Gynaecologists (RCOG) support the use of the FMF NT calculator. Guidelines from organizations such as the American College
If you are a certified professional, the calculator uses the based on the Suruss-Logistic Regression Model . The inputs required are: