RT Journal Article
SR Electronic
T1 Longitudinal study of carbon monoxide intoxication by diffusion tensor imaging with neurospsychiatric correlation
JF Journal of Psychiatry and Neuroscience
JO J Psychiatry Neurosci
FD Canadian Medical Association
SP 115
OP 125
DO 10.1503/jpn.090057
VO 35
IS 2
A1 Chang, Chiung-Chih
A1 Chang, Wen-Neng
A1 Lui, Chun-Chung
A1 Wang, Jiun-Jie
A1 Chen, Chih-Feng
A1 Lee, Yu-Chang
A1 Chen, Shun-Sheng
A1 Lin, Yu-Ting
A1 Huang, Chi-Wei
A1 Chen, Ching
YR 2010
UL http://jpn.ca/content/35/2/115.abstract
AB Background: White matter damage is common after carbon monoxide (CO) intoxication, but in vivo follow-up studies about the mechanism of white matter damage are not possible in pathology series. Diffusion tensor imaging (DTI) and voxel-based morphometry (VBM) can quantify diffusion parameters and volumetric changes in white matter that can be correlated with neuropsychological performances in longitudinal studies.Methods: We examined 9 patients with CO intoxication using DTI, VBM and neuropsychologic tests at an average of 3 and 10 months after CO exposure. We used data from 18 age- and sex-matched controls for comparison.Results: We found that cognitive recovery at 10 months after CO intoxication was not significant, although it was after 3 months. The neuropsychologic tests correlated better for the fibre tract of the semicentrum ovale and not the periventricular fibres. Diffusion measures suggest increases in fractional anisotropy, mean diffusivity and axial eigenvalues over time, while increases in radial eigenvalue were evident at 3 months compared with controls. Periventricular white matter atrophy was observed 10 months after CO intoxicationLimitations: Our study included few cases, and the interpretation of the putative changes on neuroimaging findings cannot be confirmed by histology.Conclusion: Our study showed that the evolution of white matter injury in CO encephalopathy occurred over time. Cognitive recovery was not evident in the follow-up period because of white matter injuries.