Cerebral MRI findings in a cohort of ex-preterm and control adolescents

Zoltan Nagy1, Baldvin Jónsson

  • 1Department of Woman and Child Health, Neonatalogy, Karolinska Institute, Stockholm, Sweden. zoltan.nagy@ki.se

Insights

Adolescents born preterm had fewer brain abnormalities on MRI than expected, likely due to minimally invasive neonatal care and Swedish social structures. This study tracked preterm infants long-term.

Area of Science:

  • Neuroimaging
  • Pediatric Neurology
  • Developmental Pediatrics

Background:

  • Preterm birth is a significant risk factor for neurodevelopmental challenges.
  • Cerebral magnetic resonance imaging (MRI) is crucial for assessing brain structure in preterm infants.
  • International comparisons of neuroimaging outcomes in preterm populations are essential for understanding variations in care and outcomes.

Purpose of the Study:

  • To compare cerebral magnetic resonance imaging (MRI) findings in adolescents born preterm with international cohort data.
  • To investigate the long-term structural brain outcomes of individuals born preterm.
  • To identify potential factors influencing neuroimaging results in ex-preterm individuals.

Main Methods:

  • Prospective, long-term follow-up study of preterm-born infants.
  • Cerebral MRI examinations (1.5T scanner, T1- and T2-weighted images) performed on ex-preterm and control participants.
  • Independent and consensus review of MRI scans by experienced neuroradiologists.

Main Results:

  • A low overall rate of brain abnormalities (21/143 scans), mostly mild.
  • Ex-preterm adolescents showed mild white matter loss or gliosis, with some having incidental findings.
  • No significant relationship found between the extent/severity of injury and being born small for gestational age.

Conclusions:

  • The rate of structural brain abnormalities in Swedish adolescents born preterm was lower than reported internationally.
  • Minimally invasive neonatal care practices in Sweden may contribute to better neuroimaging outcomes.
  • Distinct social structures in Sweden could also play a role in the observed lower rates of abnormalities.
Abstract

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