Comparison of Fetal Cerebellum and Cisterna Magna Length by 2D and 3D Ultrasonography between 18 and 24 Weeks of Pregnancy

Table 1

Comparison and difference between the diameter (mm) measures of the fetal transverse cerebellar (mm) obtained by two- and three-dimensional ultrasonography.

Cerebellum	𝑛	Min	Max	Mean	SD	10th	25th	50th	75th	90th
2DUS	69	18.14	29.10	22.33	3.01	18.59	19.42	21.75	24.82	26.81
3DUS	69	18.06	29.34	23.09	3.16	19.42	20.13	23.00	26.07	27.17
3DUS-2DUS	69	−0.34	2.31	0.76	0.57	0.08	0.34	0.68	1.09	1.52

2DUS: two-dimensional ultrasonography; 3DUS: three-dimensional ultrasonography; SD: standard deviation.