Citation

Ware AL, Goodrich-Hunsaker NJ, Lebel C, Shukla A, Wilde EA, Abildskov TJ, Bigler ED, Cohen DM, Mihalov LK, Bacevice A, Bangert BA, Taylor HG, Yeates KO. J. Neurotrauma 2020; ePub(ePub): ePub.

Affiliation

University of Calgary, 2129, Psychology, Calgary, Alberta, Canada; kyeates@ucalgary.ca.

Copyright

(Copyright © 2020, Mary Ann Liebert Publishers)

DOI

10.1089/neu.2019.6850

PMID

32178577

Abstract

Studies of brain morphometry may illuminate the effects of pediatric mild traumatic brain injury (TBI; e.g., concussion). However, no published studies have examined cortical thickness in the early injury phases of pediatric mild TBI using an appropriate comparison group. The current study used an automated approach (i.e., Freesurfer) to determine whether cortical thickness differed in children following a mild TBI or a mild orthopedic injury (OI), and to examine whether post-acute cortical thickness predicted with post-acute and chronic post-concussive symptoms (PCS). Children aged 8-16.99 years with mild TBI (n=136) or OI (n=70) were recruited at emergency department visits to two children's hospitals, during which parents rated children's pre-injury symptoms retrospectively. Children completed a post-acute (<2 weeks post-injury) assessment, which included a 3T MRI, and 3- and 6-month post-injury assessments. Parents and children rated PCS at each assessment. Cortical thickness was estimated using FreeSurfer. Linear mixed effects and multivariable negative binomial regression models were used to test study aims, with False Discovery Rate (FDR) correction for multiple comparisons. Groups differed significantly on left parietal cortical thickness (TBI>OI) after FDR correction. Cortical thickness also varied by brain subregion and age, but not sex. Groups differed significantly on PCS post-acutely (TBI>OI), but not at 3 or 6 months. Right frontal thickness was positively related to post-acute PCS in both groups. Right cingulum thickness predicted chronic PCS in the OI group only.

RESULTS highlight the complexity of predicting outcomes of pediatric mild TBI from post-acute neuroimaging biomarkers.

Language: en

Keywords

MRI; OUTCOME MEASURES; PEDIATRIC BRAIN INJURY; TRAUMATIC BRAIN INJURY