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Dev Med Child Neurol. 2017 Apr;59(4):433-440. doi: 10.1111/dmcn.13364. Epub 2016 Dec 14.

Association between corpus callosum development on magnetic resonance imaging and diffusion tensor imaging, and neurodevelopmental outcome in neonates born very preterm.

Author information

1
Department of Pediatrics, University of British Columbia and BC Children's and Women's Hospital, Vancouver, BC, Canada.
2
BC Children's Hospital Research Institute, Vancouver, BC, Canada.
3
Department of Paediatrics, The Hospital for Sick Children and the University of Toronto, Toronto, ON, Canada.
4
Neurosciences and Mental Health, SickKids Research Institute, Toronto, ON, Canada.
5
Department of Radiology, University of British Columbia and BC Children's Hospital, Vancouver, BC, Canada.
6
Statistics, University of British Columbia and BC Children's Hospital, Vancouver, BC, Canada.

Abstract

AIM:

To characterize corpus callosum development in neonates born very preterm from early in life to term-equivalent age and its relationship with neurodevelopmental outcome at 18 months corrected age.

METHOD:

In a prospective cohort of 193 neonates born preterm, 24 to 32 weeks' gestation, we used magnetic resonance imaging and diffusion tensor imaging acquired early in life (n=193) and at term-equivalent age (n=159) to measure corpus callosum development: mid-sagittal area (including corpus callosum subdivisions) and length, and fractional anisotropy from the genu and splenium. We examined the association of (1) intraventricular haemorrhage (IVH) and white matter injury (WMI) severity, and (2) neurodevelopmental outcome at 18 months corrected age with corpus callosum development.

RESULTS:

Severe WMI and severe IVH were strongly associated with reduced corpus callosum area (both p<0.001) and WMI with lower fractional anisotropy (p=0.002). Mild WMI predicted smaller corpus callosum area only posteriorly; mild IVH predicted smaller area throughout. Adverse motor outcome was associated with smaller corpus callosum size in the posterior subdivision (p=0.003). Abnormal cognitive outcomes were associated with lower corpus callosum fractional anisotropy (p=0.008).

INTERPRETATION:

In newborn infants born very preterm, brain injury is associated with changes in simple metrics of corpus callosum development. In this population, the development of the corpus callosum, as reflected by size and microstructure, is associated with neurodevelopmental outcomes at 18 months corrected age.

PMID:
27976377
DOI:
10.1111/dmcn.13364
[Indexed for MEDLINE]
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