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DTI reveals network injury in perinatal stroke
  1. Jeroen Dudink1,2,
  2. Serena J Counsell3,
  3. Maarten H Lequin2,
  4. Paul P Govaert1,4
  1. 1Department of Neonatology, Sophia Children's Hospital, Rotterdam, The Netherlands
  2. 2Pediatric Radiology, ErasmusMC Sophia, Rotterdam, The Netherlands
  3. 3Imaging Sciences Department, MRC Hammersmith/St Mary's Comprehensive Biomedical Research Centre, London, UK
  4. 4Department of Pediatrics, Section of Neonatology, Paola Kinderziekenhuis, Antwerp, Belgium
  1. Correspondence to Dr Jeroen Dudink, Department of Neonatology, Sophia Children's Hospital, Dr Molenwaterplein 60, Rotterdam 3015GJ, The Netherlands; j.dudink{at}erasmusmc.nl

Abstract

Background Previous research showed acute diffusion-weighted imaging changes in pulvinar after extensive cortical injury from neonatal stroke. The authors used diffusion tensor imaging (DTI) to see how separate regions of ipsilateral thalamus are directly affected after a primary hit to their connected cortex in neonatal stroke.

Methods The authors analysed DTI images of three term infants with acute unilateral cortical arterial ischaemic stroke. Probabilistic tractography was used to define separate thalamic regions of interests (ROIs). The authors evaluated the three eigenvalues (EV) and apparent diffusion coefficient (ADC) values in the ROIs.

Results The ADC and EV in voxels of ROIs placed within the nuclei corresponding to ischaemic cortex were significantly lower than those in the unaffected contralesional thalamic nuclei.

Conclusions Our findings support the concept of acute network injury in neonatal stroke. ADC and EV were altered in specific thalamic regions that corresponded to the specific cortical areas affected by the primary ischaemic injury.

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Footnotes

  • Ethics approval The study was approved by ErasmusMC METC.

  • Competing interests None.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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