Fig. 2.

Prenatal and postnatal tractography of the corpus callosum segments in a girl, case 10. a, b Prenatal (28+2 gestational weeks) and (c, d) postnatal (7 months) tractography pair and their respective sagittal T2-weighted images are illustrated, with only three of the four segments of the corpus callosum (yellow arrowhead rostrum, solid red arrowhead genu, white arrowhead body, dotted red arrowhead splenium) identified in the prenatal pair. In the postnatal segmentation of the corpus callosum (c, d), the same three segments are identified. The prenatal tractography is considered accurate for this case because each of the same three segments is identified in the postnatal tractography. Moreover, as the sagittal T2-weighted postnatal image shows, the body of the corpus callosum is indeed absent