Table 2.

3D measurement fetal brain biometry

	Supratentorial brain tissue	Total lateral ventricles	Cortex	Cerebellum	Extra-cerebral CSF
Spearman’s r	0.98**	0.483**	0.967**	0.986**	0.856**
Average volume (cm3)
At 22 GW	43.26	2.51	10.19	1.57	26.90
At 26 GW	92.26	3.29	17.38	3.77	60.85
At 30 GW	153.31	3.99	29.63	7.38	84.43
At 34 GW	226.39	4.60	50.51	12.38	97.63
At 38 GW	311.52	5.14	86.12	18.78	100.45
Relative growth rate (%/week)	13.04	3.86	14.78	17.31	9.60
Absolute growth rate (cm3/week)
At 22 GW	10.75	0.20	1.36	0.38	9.78
At 26 GW	13.76	0.18	2.32	0.73	7.19
At 30 GW	16.77	0.16	3.95	1.08	4.60
At 34 GW	19.78	0.14	6.74	1.43	2.00
At 38 GW	22.79	0.12	11.49	1.78	−0.59

Volumetric results for normal control cohort. The correlation of the volume of each intracranial structure and GA is indicated by the Spearman’s r value. Relative growth rate represents the percent volume increase relative of the average volume of the structure. ** p < 0.0001