S M Jurick1,2, K J Bangen3,4, N D Evangelista2,4, M Sanderson-Cimino4, L Delano-Wood2,3,4,5, A J Jak2,3,4,5. 1. a San Diego State University/University of California San Diego Joint Doctoral Program in Clinical Psychology , San Diego , CA , USA. 2. b Veterans Medical Research Foundation , San Diego , CA , USA. 3. c Department of Psychiatry , University of California San Diego , San Diego , CA , USA. 4. d Research Service. 5. e Psychology Service, VA San Diego Healthcare System , San Diego , CA , USA.
Abstract
BACKGROUND: Difficulty providing accurate diagnosis and prognosis, especially after mild forms of traumatic brain injury (TBI), has increased efforts to detect changes in white matter microstructure using advanced neuroimaging techniques. Although methods such as diffusion tensor imaging (DTI) have greatly increased knowledge of white matter changes resulting from TBI, several shortcomings limit the utility of these techniques particularly when applied to populations with mild TBI (mTBI) history. In vivo imaging of myelin may be particularly well suited to detect changes in white matter microstructure resulting from mTBI. REVIEW: This manuscript will briefly review the animal and histological data supporting the important role of myelin following TBI, contributions and shortcomings of the use of diffusion tensor imaging (DTI) in mild TBI and the utility of multi-component relaxometry (MCR) techniques as a method for improved visualizing of white matter microstructural integrity in myelin. CONCLUSION: The use of MCR-based techniques has potential as a clinical and research tool to assess and track changes in myelin as well as the common behavioural changes such as slowed processing speed following TBI.
BACKGROUND: Difficulty providing accurate diagnosis and prognosis, especially after mild forms of traumatic brain injury (TBI), has increased efforts to detect changes in white matter microstructure using advanced neuroimaging techniques. Although methods such as diffusion tensor imaging (DTI) have greatly increased knowledge of white matter changes resulting from TBI, several shortcomings limit the utility of these techniques particularly when applied to populations with mild TBI (mTBI) history. In vivo imaging of myelin may be particularly well suited to detect changes in white matter microstructure resulting from mTBI. REVIEW: This manuscript will briefly review the animal and histological data supporting the important role of myelin following TBI, contributions and shortcomings of the use of diffusion tensor imaging (DTI) in mild TBI and the utility of multi-component relaxometry (MCR) techniques as a method for improved visualizing of white matter microstructural integrity in myelin. CONCLUSION: The use of MCR-based techniques has potential as a clinical and research tool to assess and track changes in myelin as well as the common behavioural changes such as slowed processing speed following TBI.
Authors: Heather S Spader; Douglas C Dean; W Curt LaFrance; Neha P Raukar; G Rees Cosgrove; Stephanie A Eyerly-Webb; Anna Ellermeier; Stephen Correia; Sean C L Deoni; Jeffrey Rogg Journal: J Neurosurg Date: 2018-04-01 Impact factor: 5.115