Comparison of Fetal Nuchal Fold Thickness Measurements by Two- and Three-Dimensional Ultrasonography (3DXI Multislice View)

Table 1

Comparison of nuchal fold thickness measurements by two- and three-dimensional ultrasonography methods.

Method	Mean (mm)	Standard deviation (mm)	Minimum (mm)	Maximum (mm)
2D-NF	3.52	0.95	1.69	7.14
3D-NF	3.90	1.02	2.13	7.72

NF: nuchal fold thickness; 2D: two-dimensional ultrasonography; 3D: three-dimensional ultrasonography using three-dimensional extended imaging.