Fig 1. Axial inversion-recovery image (A) shows a subcortical heterotopia on the right side. Axial T2-weighted image (B) demonstrates the selected volumes of interest located at the MCD (1) and at the normal-appearing contralateral side (2). MR spectroscopy obtained from the volume of interest centered at the MCD (C) shows a decreased NAA/Cr. D, MR spectroscopy obtained from the NACS. E, MR spectroscopy obtained from the white matter in a control subject.