Post-hemorrhagic ventricular dilatation affects white matter maturation in extremely preterm infants.

Background: Data on microstructural white matter integrity in preterm infants with post-hemorrhagic ventricular dilatation (PHVD) using diffusion tensor imaging (DTI) are limited. Also, to date, no study has focused on the DTI changes in extremely preterm (EP) infants with PHVD.

Methods: A case-control study of EP infants <28 weeks' gestation with PHVD was conducted.

Cerebral Blood Flow Measured by Phase-Contrast Magnetic Resonance Angiography in Preterm and Term Neonates.

Background: Preterm infants show a decreased tortuosity in all proximal segments of the cerebral vasculature at term-equivalent age (TEA). Recently MRI techniques were developed to measure cerebral blood flow (CBF) based on phase-contrast images.

Objectives: We hypothesized that arterial CBF corrected for brain size differs between full-term and preterm infants at TEA.