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Table 1 Patient's characteristics and their volumetric and PET/CT data

From: 18F-FDG PET/CT-based gross tumor volume definition for radiotherapy in head and neck Cancer: a correlation study between suitable uptake value threshold and tumor parameters

Patient

Tumor type (AJCC stage)

C-pGTV (mL)

SUVmax

BTV (mL) 10% TL

BTV (mL) 20% TL

BTV (mL) 30% TL

BTV (mL) 40% TL

BTV (mL) 50% TL

sTL

sSUV

1

HPC (T2N2)

43.3

30.6

47.9

35.5

30

25.4

19.2

13%

3.98

2

OPC (T4N1)

75.4

17.2

92.1

42.8

31.6

24.8

18.2

16%

2.75

3

NPC (T4N2)

110.2

17

139.2

77.3

59.3

47

37.5

15%

2.55

4

NPC (T3N1)

30.4

14.6

40.7

22.7

14.6

8.3

2.8

15%

2.19

5

NPC (T1N1)

14.8

15.7

36.6

12

7.2

5.4

4.2

17%

2.21

6

OPC (T3N1)

47.7

24.1

75.8

33.3

21.1

14.1

9.9

14%

3.37

7

NPC (T4N2)

38.7

8.0

-

60

30.8

17.4

12.3

27%

2.16

8

NPC (T3N2)

44.6

17.0

64.7

33.6

24.5

17.5

13.6

15%

2.55

9

NPC (T2N1)

12.8

7.8

39.6

13

5.6

4

2.4

21%

1.64

10

NPC (T4N1)

35.5

8.2

80.7

44

21.9

10

5.6

23%

1.89

11

NPC (T1N1)

9.6

9.0

37.6

13.8

4.9

2.2

1.2

23%

2.07

12

NPC (T3N3)

27.8

17.5

49.9

13.7

9.2

5.3

3.2

14%

2.45

13

NPC (T3N2)

37.1

12.9

67.4

37.9

20.6

12

9.5

20%

2.57

14

NPC (T2N2)

22.4

8.1

-

35.6

14.8

9.2

5.9

27%

2.19

15

HPC (T2N1)

14.3

12.2

46.8

14.5

5.2

3.1

2.3

20%

2.44

  1. Abbreviation: NPC: nasopharyngeal cancer; OPC: oropharyngeal cancer; HPC: hypopharyngeal cancer; C-pGTV: CT-base primary gross tumor volume; BTV: biological target volume from PET/CT-base primary gross tumor volume; TL: threshold level; sTL: suitable threshold; sSUV: suitable SUV.