Tract-based spectroscopy to investigate pediatric brain trauma

Emily L. Dennis, Jeffry R. Alger, Talin Babikian, Faisal Rashid, Julio E. Villalon-Reina, Richard Mink, Christopher Babbitt, Jeffrey Johnson, Christopher C. Giza, Robert F. Asarnow, Paul M. Thompson

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Traumatic brain injury (TBI) causes extensive damage to the white matter (WM) of the brain, which can be evaluated with diffusion-weighted magnetic resonance imaging (dMRI). Diffusion MRI can be used to map the WM tracts and their integrity, but offers limited understanding of the biochemical basis of any differences. Magnetic resonance spectroscopy (MRS) measures neural metabolites that reflect neuronal health, inflammation, demyelination, and other consequences of TBI. We combined whole-brain MRS with dMRI to investigate WM dysfunction following pediatric TBI, using "tract-based spectroscopy". Deficits in N-acetylaspartate (NAA) correspond to regions of deficits in WM integrity, but choline showed minimal overlap with WM deficits. NAA is a marker of neuronal health, while choline is an inflammatory marker. A partial F-test showed that MRS measures improved our ability to predict long-term cognitive function. This is the first paper to combine MRS with dMRI-derived tracts on a whole-brain scale, offering insights into the biochemical correlates of WM tract dysfunction, following injury and potentially in other WM disorders.

Original languageEnglish
Title of host publication12th International Symposium on Medical Information Processing and Analysis
EditorsEduardo Romero, Natasha Lepore, Jorge Brieva, Ignacio Larrabide
PublisherSPIE
ISBN (Electronic)9781510607781
DOIs
StatePublished - 2017
Externally publishedYes
Event12th International Symposium on Medical Information Processing and Analysis, SIPAIM 2016 - Tandil, Argentina
Duration: 5 Dec 20167 Dec 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10160
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference12th International Symposium on Medical Information Processing and Analysis, SIPAIM 2016
Country/TerritoryArgentina
CityTandil
Period5/12/167/12/16

Keywords

  • Diffusion magnetic resonance imaging (dMRI)
  • Magnetic resonance imaging (MRS)
  • Tractography
  • Traumatic brain injury (TBI)

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