Susceptibility weighted imaging and its relationship to outcome after pediatric traumatic brain injury
Miriam H Beauchamp1, Richard Beare, Michael Ditchfield
1Department of Psychology, University of Montreal, Montreal, Canada.
Insights
Susceptibility weighted imaging (SWI) detects brain lesions in children with traumatic brain injury (TBI). SWI shows promise for predicting cognitive outcomes after pediatric TBI.
Area of Science:
- Neuroimaging
- Pediatric Neurology
- Trauma Surgery
Background:
- Childhood traumatic brain injury (TBI) can lead to lasting physical, cognitive, and functional impairments.
- Predicting outcomes after pediatric TBI is challenging for clinicians and researchers.
- Advanced neuroimaging techniques may improve outcome prediction by better characterizing brain lesions.
Purpose of the Study:
- To investigate the relationship between lesions detected by susceptibility weighted imaging (SWI) and cognitive and functional outcomes in children with TBI.
- To assess the utility of SWI in predicting outcomes across different TBI severity levels.
Main Methods:
- 106 participants (ages 5-14) with varying TBI severity underwent SWI approximately 1 month post-injury.
- Cognitive (intellectual functioning, processing speed) and adaptive skills were assessed 6 months post-injury.
Main Results:
- More severe TBI correlated with poorer intellectual and adaptive functioning and increased behavioral problems.
- The number and volume of SWI lesions significantly correlated with clinical outcomes (GCS, surgery, hospital stay, intubation) and intellectual functioning.
- SWI and Glasgow Coma Score (GCS) together explained a small but significant portion of the variance in intellectual quotient (IQ).
Conclusions:
- SWI is a sensitive method for identifying brain lesions in pediatric TBI patients across all severity levels.
- SWI demonstrates potential for early prediction of cognitive outcomes following TBI in children.
Introduction:
Traumatic brain injury (TBI) sustained during childhood can cause difficulties in a wide range of physical, neurological, cognitive, social and functional domains. However, the ability of health professionals and researchers to accurately predict the outcome of pediatric TBI remains limited. The advent of advanced neuroimaging techniques shows some promise in improving outcome prediction, as they contribute to greater sensitivity in characterizing intracranial lesions underlying many cognitive and functional deficits. In this study, the relationship between lesions identified on susceptibility weighted imaging (SWI) and cognitive and functional outcomes was investigated following childhood TBI.
Method:
Participants between 5 and 14 years of age with varying levels of TBI severity (mild, mild complicated, moderate, severe, n = 106) underwent susceptibility weighted scanning on average 1-month post-injury and completed an assessment of intellectual functioning, processing speed, and behavioral and adaptive skills 6-month post-injury.
Results:
More severe TBI was generally associated with poorer intellectual functioning, greater behavioral problems and lower adaptive functioning. Number and volume of SWI lesions were significantly correlated with clinical outcome variables including Glasgow Coma Score (GCS), surgical intervention, length of hospital stay and length of intubation, as well as with intellectual functioning. Together, SWI and GCS accounted for a significant, though small, proportion of the variance in intellectual quotient (IQ).
Conclusions:
SWI is a sensitive technique for detecting brain lesions at all TBI severity levels and shows promise in contributing to prediction of cognitive outcomes in the initial stages post-injury.
