Infant, 8 months: “adult” signal pattern.
A, Axial SE T1-weighted MR image (550/20/2) shows multiple bihemispheric tubers (only left frontal and parietal ones are marked by short arrows) and left parietal white matter anomalies (long arrow), all moderately to markedly hypointense; subependymal nodules at both foramina of Monro (only smaller one on right is marked by curved arrow) are moderately hyperintense.
B, Axial SE T1-weighted MR image (550/20/2) shows numerous hypointense tubers (not marked) in both hemispheres.
C, Axial SE T2-weighted MR image (3600/90/1) shows tubers (not marked) as marked hyperintensities.