Fig. 3.

Fetal and postnatal corpus callosum segmentation in a boy (case 9) with a midline parieto-occipital cyst. a–e Gestational weeks 29+4. a Coronal T2-weighted (TR/TE 10,658/140 ms, flip angle 90°) MR image of the brain. b, c Sagittal (b) and axial (c) T2-weighted MR images of the brain with a midline posterior parieto-occipital cyst. d Overlay of the fiber tracts of the corpus callosum on a sagittal T2-weighted image. e The rostrum, genu, body and splenium are identifiable on this sagittal diffusion tensor image (DTI) of the corpus callosum in the fetal brain. f–j Age 5 days. f Coronal T2-weighted (TR/TE 3,070/134 ms, flip angle 180°) MR image of the brain. g Sagittal T2-weighted image. h Axial T2-weighted image of the brain with a midline posterior parieto-occipital cyst. i Segmented sagittal tractography of the corpus callosum. j The rostrum, genu, body and splenium are identifiable on sagittal DTI of the corpus callosum in the 5-day-old postnatal brain. TE echo time, TR repetition time