Am J Perinatol 2016; 33(05): 486-489
DOI: 10.1055/s-0035-1566248
Original Article
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Comparative Analysis of Two- Versus Three-Dimensional Sonography for Nuchal Translucency Measurement

Adeeb Khalifeh
1   Division of Maternal Fetal Medicine, Thomas Jefferson University Hospitals, Philadelphia, Pennsylvania
,
Stuart Weiner
1   Division of Maternal Fetal Medicine, Thomas Jefferson University Hospitals, Philadelphia, Pennsylvania
,
Vincenzo Berghella
1   Division of Maternal Fetal Medicine, Thomas Jefferson University Hospitals, Philadelphia, Pennsylvania
,
Steven Scott
2   Division of Maternal Fetal Medicine, Lankenau Medical Center, Wynnewood, Pennsylvania
,
Andrew Gerson
2   Division of Maternal Fetal Medicine, Lankenau Medical Center, Wynnewood, Pennsylvania
› Author Affiliations
Further Information

Publication History

14 May 2015

24 September 2015

Publication Date:
03 November 2015 (online)

Abstract

Objective The aim of this article is to test the hypothesis that three-dimensional (3D) sonography is correlated to the two-dimensional (2D) sonography for nuchal translucency (NT) measurement during first trimester screening (FTS).

Methods We performed a prospective observational study on patients presenting for FTS. Three NT measurements were performed using the current standardized 2D method at the midsagittal planes, and NT sonography was then repeated for each case using 3D sagittal and axial plane. The Kruskal–Wallis test and the Spearman rank correlation were used to evaluate the relationship between 2D and 3D NT methods of measurement. A p-value <0.05 was considered significant.

Results The study included 366 patients with singleton pregnancies. Mean maternal age was 31.2 years, and mean gestational age was 123/7 weeks. The mean maximal NT measurement for 2D and 3D sagittal and axial planes were 1.65, 1.70, and 1.66 mm, respectively (p = 0.42). The Spearman rank correlation of 2D sagittal plane sonography with 3D sagittal and axial planar sonography was 0.73 and 0.68, respectively (p < 0.001).

Conclusion 3D NT measurement appears to be a tool highly correlated to the conventional 2D sonographic approach. This may be useful in selected cases in which there is difficulty in obtaining optimal 2D measurements of the NT space.

 
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