Abstract
Background. Reduction of cortical thickness and Hippocampal volume (HV) in Methamphetamine abusers (MA) has been reported. However, change of white matter volume (WMV) in MA group is inconclusive. We aim to compare cortical thickness, Hippocampal volume (HV), and WMV per intra-cranial volume (ICV) among MA in Thai adolescents. Methods. 3D T1-wighted high resolution MR images from 11 MAs and 10 HCs with gender and age match with mean age 25.48 ±4.9 were acquired on a 1.5T Philips MR scanner. Automated Talairach transform and images group analysis with general linear model (GLM) were performed using FreeSurfer software. HV, FWMV/ICV, and WMV/ICV between MA and HC groups were compared. Results. Significant thinner regions (p < 0.05) of cortical thickness in MA group were found at the right temporal and parietal lobes. Trends of smaller Hippocampal volume on left and right by 5.1% and 4.3% and increasing of Left FWMV/ICV, right FWMV/ICV, and tWMV/ICV by 3.1%, 4.5% and 3.8% respectively in MA group compared to HC group. Conclusions. The results demonstrated significant thinner of cortical thickness at the right temporal and parietal lobes and the trend of WM hypertrophy and smaller Hippocampus in MA group.
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