Pitfalls in Diffusion-Weighted and Diffusion Tensor Imaging of the Pediatric Brain

Nivedita Agarwal, Aylin Tekes, Andrea Poretti, Avner Meoded, Thierry A.G.M. Huisman

Research output: Contribution to journalReview articlepeer-review

Abstract

Diffusion-weighted imaging (DWI) and diffusion tensor imaging (DTI) are advanced magnetic resonance imaging (MRI) techniques that are based on differences in the diffusion rate of water molecules in brain tissue. DWI and DTI are widely used in pediatric neuroradiology to evaluate a wide spectrum of brain diseases. The interpretation of DWI and DTI images requires a basic knowledge of the underlying physics to detect potential pitfalls and avoid misinterpretation. Several DWI pitfalls are related to the dependency of DWI images not only on the diffusivity of water molecules, but also on various additional MRI phenomena such as the T1- and T2- relaxation characteristics and MRI-related artifacts. In addition, knowledge about the age of the child and interval between the onset of injury and acquisition of DWI/DTI images is important. Finally, qualitative evaluation (eye-balling) maybe misleading, and the application of quantitative measurements of DTI scalars may avoid misdiagnosis.

Original languageEnglish (US)
Pages (from-to)340-349
Number of pages10
JournalNeuropediatrics
Volume48
Issue number5
DOIs
StatePublished - Oct 1 2017

Keywords

  • artifacts
  • brain
  • children
  • diffusion tensor imaging
  • diffusion-weighted imaging
  • neuroimaging
  • pitfalls

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Clinical Neurology

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