Three-dimensional ultrasound cranial imaging and early neurodevelopment in preterm growth-restricted infants

Glenda McLean1, Catherine Hough2, Arvind Sehgal3,4

  • 1Department of Diagnostic Imaging, Monash Health, Melbourne, Victoria, Australia.

Insights

Fetal growth restriction (FGR) in preterm infants is linked to poorer motor skills, detectable by the Test of Infant Motor Performance (TIMP). Early 3D ultrasound may help identify neuropathology that contributes to these functional deficits.

Area of Science:

  • Neonatal Neurology
  • Developmental Pediatrics
  • Fetal Medicine

Background:

  • Fetal growth restriction (FGR) is a significant risk factor for adverse perinatal outcomes and long-term neurodevelopmental issues.
  • Early identification of neurodevelopmental deficits in preterm infants with FGR is crucial for timely intervention.

Purpose of the Study:

  • To investigate early neurodevelopmental deficits in preterm infants with FGR using 3D head ultrasound and developmental assessments.
  • To compare these findings with appropriate for gestational age (AGA) preterm infants.

Main Methods:

  • A cohort of 20 preterm FGR infants (<10th percentile) and age-matched AGA infants (28-32 weeks gestation) were studied.
  • Three-dimensional ultrasound assessed cerebral ventricular volumes in the second postnatal week.
  • Prechtl General Movement Assessments and the Test of Infant Motor Performance (TIMP) evaluated motor development at 4-6 and 12-14 weeks corrected age.

Main Results:

  • No significant difference in combined cerebral ventricular volume was found between FGR and AGA groups.
  • FGR infants showed a trend towards lower TIMP scores at 12-14 weeks corrected age, indicating worse functional motor performance.
  • A significant negative correlation was observed between greater ventricular volume and lower TIMP scores across both groups.

Conclusions:

  • Early 3D head ultrasound may detect neuropathology in preterm FGR infants.
  • This neuropathology could underlie the observed functional motor deficits, as suggested by TIMP scores.
  • These findings highlight the potential of early neuroimaging and functional assessments for managing FGR-related neurodevelopmental risks.
Abstract