Table 1. Patient and Tumor characteristics.

Patient characteristics				Tumor characteristics
Patient number	Sex	Age (yrs.)	Primary or recurrent cancer	Tumor site	Tumor volume in PET (cm³)	Tumor size in MRI (cmxcm)	Tumor staging(original staging for recurrent cancers)			Tumor grading
1	M	54	primary	Oropharynx	18,0	3,8 x 3,2	cT3	cN2b	cM0	G2
2	M	57	primary	Oropharynx	3,3	2,4 x 1,6	cT2	cN3	cM0	G2
3	M	50	primary	Hypopharynx	12,6	3,4 x 3,3	cT4b	cN3	cM0	G2
4	M	56	primary	Hypopharynx	4,2	1,9 x 1,6	cT3	cN1	cM0	G3
5	M	61	primary	Larynx	8,0	3,5 x 2,6	pT3	pN2c	cM0	G3
6	F	66	primary	Oropharynx	9,5	3,0 x 2,4	cT2	cN2b	cM0	G3
7	M	49	primary	Hypopharynx	22,1	4,2 x 2,5	cT4	cN2c	cM0	G2
8	M	50	primary	Oro-/ Hypopharynx	42,7	3,8 x 3,2	cT4b	cN2b	cM1	G2
9	F	57	primary	Tongue	5,9	3,6 x 1,7	cT4a	cN2c	cM0	G1
10	M	54	primary	Oropharynx	6,9	3,8 x 2,7	cT3	cN2c	cM0	G3
11	M	63	primary	Oro-/ Hypopharynx	17,3	5,0 x 2,3	pT3	pN3	cM0	G3
12	M	59	recurrent	Tongue	4,1	2,3 x 1,4	cT3	cN1	cM0	G2
13	M	59	recurrent	Tongue	13,1	3,4 x 1,4	cT4a	cN2c	cM0	G2
14	M	79	recurrent	Oral diaphragm	44,1	4,7 x 3,2	pT1	pN0	M0	G3
15	M	53	recurrent	Oropharynx	5,1	2,5 x 0,9	pT3	pN0	M0	G3
16	M	52	recurrent	Larynx	2,9	1,7 x 1,0	pT4a	pN2c	M0	G3
17	M	61	recurrent	Tongue / Oral diaphragm	10,6	2,3 x 1,8	pT3	pN0	M0	G2