|
FIG 6. Volumetric changes of the fetal brain (open triangles), germinal matrix (open circles), and lateral ventricles (solid circles). Increasing fetal brain volume (gray curve) has an exponential relationship (r2 = .963) to GA, reaching 132.5 cm3 at 28 weeks' GA. The germinal matrix also increases exponentially, reaching a volume of 2.3 cm3 at 23 weeks' GA, then decreases rapidly after 25 weeks' GA. In contrast to the germinal matrix, the volume of the lateral ventricles gradually increases, up to 2.6 cm3 at 23 weeks' GA
|