Table 2.

ICV-normalized volume for different brain regions in the mTBI-only and co-morbid mTBI/PTSD groups.

Brain Regions	ICV normalized volume (%) in mTBI (n=60)	ICV normalized volume (%) in Co-morbid mTBI/PTSD (n=29)	t-value	p-value
L Caudate	0.231 ± 0.027	0.238 ± 0.027	−1.12	0.26
L Hippocampus	0.271 ± 0.022	0.279 ± 0.028	−1.48	0.14
L Amygdala	0.112 ± 0.009	0.118 ± 0.011	−2.73	0.01**
L ACC	0.152 ± 0.021	0.144 ± 0.019	1.82	0.07
R Caudate	0.231 ± 0.027	0.242 ± 0.030	−1.64	0.11
R Hippocampus	0.286 ± 0.022	0.296 ± 0.026	−1.79	0.08
R Amygdala	0.115 ± 0.012	0.122 ± 0.012	−2.61	0.01**
R ACC	0.146 ± 0.021	0.143 ± 0.023	0.50	0.62

^**indicates significant statistical differences.