Nuchal fold thickness at 14-16 weeks' gestation as measured by transvaginal sonography

M. Ben-Ami, Y. Perlitz, M. Mukary, D. Peleg

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Objective: To establish normal values of fetal nuchal fold thickness at 14-16 weeks of gestation by transvaginal sonography. Methods: Transvaginal sonography was used to measure nuchal fold thickness in 182 normal pregnancies at 14-16 weeks of gestation. Nuchal fold thickness was measured as the distance from the outer skull bone to the outer skin surface in the transverse axial image in the suboccipitalbregmatic plane of the head. Results: There was no significant association between nuchal fold thickness and gestational age (r = 0.084; P = 0.258). The mean (standard deviation) was 2.2 (0.5) mm and the 95th centile was 3.0 mm. Conclusions: The 95th centile of nuchal fold thickness measured by transvaginal sonography at 14-16 weeks is 3.0 mm.

Original languageEnglish
Pages (from-to)60-61
Number of pages2
JournalUltrasound in Obstetrics and Gynecology
Issue number1
StatePublished - Jan 2002
Externally publishedYes

Bibliographical note

Funding Information:
We thank Chris Hughes from Te Anau and Brian Capper fromthe Waikato for the use of their properties for this work. We also thank Beth Henderson, Fairlie Sim, Lisa Mair, and Alec McGowan for their technical assistance and Peter Johnstone for statistical analysis. These trials were funded by Ballance Agri-Nutrients.


  • Nuchal fold thickness
  • Prenatal
  • Transvaginal sonography
  • Ultrasonography


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