FIG 4. Single heterotopion. Axial spin-echo (2500/80) (A) and coronal 3D FT gradient-echo (35/7 [ = 35°]) (B) images show that the single heterotopion is associated with deep infolding of the adjacent cortex (arrows).FIG 5. Patient 15. Closed-lip schizencephaly. Axial spin-echo (2500/30) image shows small closed-lip schizencephaly involving the left central fissure and decreased white matter volume of the ipsilateral hemisphere