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Enter the CRL and press calculate to obtain the estimated gestational age and expected nuchal translucency thickness. The calculator will also give the percentile for a measured NT if entered for CRL 40 to 85 mm.
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A resource for perinatologists, referring physicians, and...
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18 sty 2024 · Our nuchal translucency calculator finds the percentile of the nuchal fold thickness and compares it with the nuchal translucency measurement chart. This calculation allows us to estimate the risk of the genetic disorders of a given pregnancy.
Pregnant women, usually between the 11th and 14th week of gestation, undergo an ultrasound examination. The measurements taken during this ultrasound are input into the NT Calculator to help predict the likelihood of chromosomal conditions such as Down syndrome, Edwards syndrome, and Patau syndrome.
Wright D, Kagan KO, Molina FS, Gazzoni A, Nicolaides KH. A mixture model of nuchal translucency thickness in screening for chromosomal defects. Ultrasound Obstet Gynecol 2008;31:376-83 .
The Nuchal Translucency (NT) Calculator is a powerful tool used during the first trimester of pregnancy to assess the risk of chromosomal abnormalities, such as Down syndrome, in the developing fetus.
Nuchal translucency (NT) chart.
Sonographers who have obtained the FMF Certificate in the nuchal translucency (NT) scan can obtain free of charge the FMF software for first-trimester screening for chromosomal abnormalities by maternal age, fetal NT thickness and maternal serum free β-hCG and PAPP-A.
