IMR Press / CEOG / Volume 38 / Issue 1 / pii/1630488477389-617683619

Clinical and Experimental Obstetrics & Gynecology (CEOG) is published by IMR Press from Volume 47 Issue 1 (2020). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on imrpress.com as a courtesy and upon agreement with S.O.G.

Original Research
The golden ratio of nasal width to nasal bone length
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1 Istanbul Goztepe Education and Research Hospital, Istanbul
2 Istanbul International Hospital, Istanbul (Turkey)
Clin. Exp. Obstet. Gynecol. 2011, 38(1), 50–53;
Published: 10 March 2011
Abstract

Purpose: To calculate the ratio of fetal nasal width over nasal bone length at 14-39 weeks' gestation in Caucasian women. Methods: Fetal nasal bone length and nasal width at 14-39 weeks' gestation were measured in 532 normal fetuses. The mean and standard deviations of fetal nasal bone length, nasal width and their ratio to one another were calculated in normal fetuses according to the gestational age to establish normal values. Results: A positive and linear correlation was detected between the nasal bone length and the gestational week, as between the nasal width and the gestational week. No linear growth pattern was found between the gestational week and the ratio of nasal width to nasal bone length, nearly equal to phi, throughout gestation. Conclusion: The ratio of nasal width to nasal bone length, approximately equal to phi, can be calculated at 14-38 weeks' gestation. This might be useful in evaluating fetal abnormalities.;">
Keywords
Nasal bone length
Nasal width
Ratio of nasal width to nasal bone length
Phi
Golden ratio
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