Table 3.
Brain Region | 37°C, OFF | 37°C, FF | 25°C, LF | 25°C, HCA | 15°C, HCA |
---|---|---|---|---|---|
Cortex | 0.07 (0.04–0.12) |
0.57 (0.34–2.52) |
0.57 (0.42–10.75) |
10.71 (3.03–69.68) |
3.89 (1.13–14.48) |
Caudate | 0.04 (0.03–0.05) |
0.62 (0.12–3.61) |
0.79 (0.10–3.94) |
3.61 (0.86–38.07) |
1.12 (0.45–2.52) |
Hippocampus | 0.03 (0.01–0.05) |
0.06 (0.03–0.86) |
0.11 (0.02–2.24) |
5.02 0.60–8.17) |
0.17 (0.00–1.54) |
Thalamus | 0.02 (0.01–0.10) |
0.26 (0.15–2.01) |
0.54 (0.21–6.15) |
5.29 (0.20–29.92) |
0.59 (0.00–1.77) |
Cerebellum | 0.03 (0.02–0.04) |
1.42 (0.27–1.94) |
0.35 (0.03–4.51) |
11.7 (5.43–37.26) |
1.21 (0.14–23.67) |
Data represent median pixel intensity with interquartile range shown in parentheses.
Analysis was performed between groups with the nonparametric Mann-Whitney U-test.
Cortex: each group was significantly greater than 37°C, OFF (all p<0.01). No other group differences were detected, except 25°C, LF vs. 25°C, HCA (p<0.01).
Caudate: 25°C, HCA and 15°C, HCA both greater than 37°C, OFF (both p<0.01); no other group differences were observed (all p>0.10).
Hippocampus: the only significant difference was between 25°C, HCA vs. 37°C, OFF (p<0.01); no other group differences were detected (p>0.10).
Thalamus: 37°C, FF (p=0.03), 25°C, LF (p=0.02), and 25°C, HCA (p=0.02) greater than 37°C, OFF; no other group differences were found (all p>0.20).
Cerebellum: 37°C, FF (p<0.01) and 25°C, HCA (p<0.01) were greater than 37°C, OFF. In addition, 25°C, HCA was significantly greater than 25°C, LF (p<0.01) but no other group differences (all p>0.20).