Table 4.

Incidence of FDG uptake by BAT in patients aged 8 years or older

Necka
Age (y)	Group 1a	Group 2a	Group 3a
8 – 11.9	27%	56%	12%
12 – 15.9	47%	47%	20%
16 – 19.9	35%	37%	16%
⩾20	21%	37%	4%
Axillab
Age (y)	Group 1a	Group 2a	Group 3a
8 – 11.9	23%	35%	10%
12 – 15.9	36%	36%	13%
16 – 19.9	26%	23%	11%
⩾20	12%	26%	2%
Mediastinum
Age (y)	Group 1a	Group 2a	Group 3a
8 – 11.9	21%	25%	6%
12 – 15.9	27%	30%	9%
16 – 19.9	22%	24%	7%
⩾20	12%	20%	0%
Posterior Thoracic
Age (y)	Group 1a	Group 2a	Group 3a
8 – 11.9	27%	36%	7%
12 – 15.9	40%	38%	9%
16 – 19.9	27%	28%	7%
⩾20	17%	30%	1%
Abdominopelvic
Age (y)	Group 1a	Group 2a	Group 3a
8 – 11.9	8%	20%	4%
12 – 15.9	15%	19%	4%
16 – 19.9	13%	16%	3%
⩾20	6%	11%	1%

^aleft or right neck

^bleft or right axilla