. Author manuscript; available in PMC: 2013 Sep 11.

Published in final edited form as: Int J Comput Assist Radiol Surg. 2010 Jul 13;6(3):329–339. doi: 10.1007/s11548-010-0512-x

Table 4.

The coefficient of determination (r²) measures for linear, quadratic, and exponential model fittings to the volumetry data obtained for the 25 fetuses in this study

	r² (ICV)	r² (BV)	r² (PV)
Linear fit	0.917	0.930	0.941
Quadratic fit	0.922	0.945	0.953
Exponential fit	0.818	0.826	0.833

The volumetry data involve intracranial volumes (ICV), brain volumes (BV), and parenchymal volumes (PV). This analysis indicates that a quadratic model best describes the fetal ICV, BV, and PV changes versus gestational age (GA)