MR images.
A, Normal control participant, aged 2 days. Inversion recovery sequence (3800/30; inversion time, 950) shows normal appearances with high signal intensity, consistent with myelin within the posterior half of the posterior limb of the internal capsule.
B, Neonate with severe birth asphyxia, aged 2 days. No high signal from myelin in the posterior limb of the internal capsule occurs.