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Table 2 Imaging characteristics of activated BAT on 18F-FDG PET/CT and environmental factors

From: Brown adipose tissue (BAT) activation at 18F-FDG PET/CT: correlation with clinicopathological characteristics in breast cancer

Parameter Mean ± SD Median (range)
BAT (HU) − 141 ± 20 − 117.5 (− 163 to − 95)
BAT highest SUVmax 13.3 ± 9.9 9.5 (2–33)
BAT TMA 79.6 ± 45 70 (6–195)
Indoor temperature (c) 18.9 ± 0.8 19 (18–20)
Outdoor temperature (c) 32.6 ± 8.3 33 (17–48)
  1. SUVmax maximum standardized uptake value, TMA total metabolic activity