Table 3. The Relationship between PET Parameters and Clinical Indices.

Groups	MTV (mL)		TLG (g)		SUVmean		SUVmax
	Median	P	Median	P	Median	P	Median	P
Age (years)
< 56.5	3.57	0.078	7.02	0.21	2.12	0.001	3.30	0.003
> 56.5	9.00		41.21		3.54		8.20
Sex
Male	5.57	0.835	14.58	0.804	2.46	0.788	6.28	0.362
Female	7.35		15.29		3.11		3.86
Lesion location
Cervical/upper tdoracic	9.00	0.158	41.21	0.047	3.55	0.340	8.20	0.210
Lower tdoracic	4.47		10.13		2.51		4.37
Long-axis diameter (cm)
< 1.95	2.66	< 0.001	5.77	< 0.001	2.38	0.004	3.43	< 0.001
> 1.95	11.00		65.25		3.89		9.20
Histology
Adenoid cystic carcinomas	3.10	0.007	4.40	< 0.001	1.42	0.001	3.80	< 0.001
Adenocarcinoma	1.42		3.31		2.36		3.99
Squamous cell	13.90		72.68		3.81		10.51
Otders	2.30		4.02		2.14		2.84
Extension
E1	3.04	< 0.001	5.58	< 0.001	2.30	0.002	5.29	< 0.001
Non-E1	19.77		65.26		3.90		9.21
Lymph node
N0	3.71	< 0.001	8.13	< 0.001	2.40	0.007	3.75	0.006
N1/N2	19.40		74.29		4.17		9.28