BACKGROUND: Proton magnetic resonance spectroscopy can assess neurochemical sequelae in traumatic brain injury. Metabolic abnormalities are present in the acute or subacute period in patients with traumatic brain injury and correlate with outcome on clinical scales. OBJECTIVE: To investigate the use of proton magnetic resonance spectroscopy in detecting possible gray subcortical neurochemical impairments and their relationship with neuropsychological performance. DESIGN: Group comparisons and correlations of brain metabolites with clinical and neuropsychological variables. PATIENTS AND METHODS: Metabolite concentrations were acquired from voxels localized to the basal ganglia and medial temporal region in 20 patients with long-term moderate and severe traumatic brain injury and 20 matched control subjects. Both groups underwent neuropsychological assessment. RESULTS: N-acetylaspartate-choline-containing compounds ratios were decreased in patients in the basal ganglia (t = -3.28, P =.002) and medial temporal region (t = -3.52, P =.001). The basal ganglia ratio correlated to measures of speed, motor scanning, and attention. CONCLUSION: Patients with long-term TBI present a regional correlation pattern that may help identify the neurological basis of cognitive sequelae in traumatic brain injury.
BACKGROUND: Proton magnetic resonance spectroscopy can assess neurochemical sequelae in traumatic brain injury. Metabolic abnormalities are present in the acute or subacute period in patients with traumatic brain injury and correlate with outcome on clinical scales. OBJECTIVE: To investigate the use of proton magnetic resonance spectroscopy in detecting possible gray subcortical neurochemical impairments and their relationship with neuropsychological performance. DESIGN: Group comparisons and correlations of brain metabolites with clinical and neuropsychological variables. PATIENTS AND METHODS: Metabolite concentrations were acquired from voxels localized to the basal ganglia and medial temporal region in 20 patients with long-term moderate and severe traumatic brain injury and 20 matched control subjects. Both groups underwent neuropsychological assessment. RESULTS:N-acetylaspartate-choline-containing compounds ratios were decreased in patients in the basal ganglia (t = -3.28, P =.002) and medial temporal region (t = -3.52, P =.001). The basal ganglia ratio correlated to measures of speed, motor scanning, and attention. CONCLUSION:Patients with long-term TBI present a regional correlation pattern that may help identify the neurological basis of cognitive sequelae in traumatic brain injury.
Authors: Franck Amyot; David B Arciniegas; Michael P Brazaitis; Kenneth C Curley; Ramon Diaz-Arrastia; Amir Gandjbakhche; Peter Herscovitch; Sidney R Hinds; Geoffrey T Manley; Anthony Pacifico; Alexander Razumovsky; Jason Riley; Wanda Salzer; Robert Shih; James G Smirniotopoulos; Derek Stocker Journal: J Neurotrauma Date: 2015-09-30 Impact factor: 5.269
Authors: Barbara B Bendlin; Michele L Ries; Mariana Lazar; Andrew L Alexander; Robert J Dempsey; Howard A Rowley; Jack E Sherman; Sterling C Johnson Journal: Neuroimage Date: 2008-05-07 Impact factor: 6.556
Authors: Brenda L Bartnik-Olson; Jeffry R Alger; Talin Babikian; Ashley D Harris; Barbara Holshouser; Ivan I Kirov; Andrew A Maudsley; Paul M Thompson; Emily L Dennis; David F Tate; Elisabeth A Wilde; Alexander Lin Journal: Brain Imaging Behav Date: 2021-04 Impact factor: 3.978