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Cerebellar peduncle injury predicts motor impairments in preterm infants: A quantitative tractography study at

Tatsuji Hasegawa1, Kei Yamada2, Takenori Tozawa1

  • 1Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.

Brain & Development
|May 20, 2018
PubMed

Insights

Cerebellar peduncle injury in preterm infants is linked to cerebral palsy (CP). Quantitative tractography at term-equivalent age can predict motor impairments, with superior and middle cerebellar peduncle damage correlating with CP severity.

Area of Science:

  • Neuroscience
  • Pediatric Neurology
  • Medical Imaging

Background:

  • Cerebellar injury is a known factor in preterm infants diagnosed with cerebral palsy (CP).
  • Early detection of cerebellar peduncle abnormalities may aid in predicting motor deficits.

Purpose of the Study:

  • To investigate the association between cerebellar peduncle injury and motor impairments in preterm infants.
  • To utilize quantitative tractography at term-equivalent age for early assessment.

Main Methods:

  • Studied 64 preterm infants (<33 weeks gestational age) categorized into CP, Non-CP, and Normal groups.
  • Performed diffusion tensor imaging (DTI) at term-equivalent age.
  • Assessed motor function at corrected age of 2 years, measuring fractional anisotropy (FA) and apparent diffusion coefficient (ADC) of cerebellar peduncles and motor/sensory tracts.

Main Results:

  • Infants with CP showed significantly lower FA in the superior cerebellar peduncles (SCP) and sensory tracts compared to other groups.
  • No significant differences in FA and ADC of motor tracts were observed across groups.
  • CP severity correlated with FA of the middle cerebellar peduncles (MCP).

Conclusions:

  • CP is associated with injuries to ascending tracts, including the SCP and sensory tract.
  • Additional MCP injury may exacerbate CP severity.
  • Quantitative tractography at term-equivalent age shows promise for predicting motor impairments in preterm infants.
Abstract

Keywords:
CerebellumCerebral palsyDiffusion tensor imagingPreterm infantsTractography

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