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Table 1 The volume of targets and OARs for fourteen patients. (Unit:cc)

From: Improve the dosimetric outcome in bilateral head and neck cancer (HNC) treatment using spot-scanning proton arc (SPArc) therapy: a feasibility study

NO.

CTV high

CTV low/median

Ipsilateral Parotid

Contralateral Parotid

Cord

Brain Stem

Oral Cavity

1

141.7

204.5

38.8

39.4

16.3

12.9

74.6

2

418.2

202.4

23.9

12.7

18.7

24.6

81.5

3

92.8

172.1

19.8

12.7

16.0

29.2

190.3

4

173.7

400.5

53.1

57.0

12.8

19.8

136.3

5

234.2

240.7

29.8

30.5

33.2

30.6

109.0

6

127.9

283.4

43.0

41.2

8.9

7.9

55.7

7

106.7

119.3

20.1

23.6

25.9

7.1

61.4

8

124.3

324.0

43.7

41.8

14.2

20.8

127.2

9

174.2

394.2

20.2

27.6

49.3

36.7

52.0

10

238.6

200.8

30.2

35.7

19.1

28.0

44.7

11

65.7

374.6

22.4

26.8

17.0

28.9

95.7

12

100.8

286.8

33.8

31.7

29.7

19.4

59.7

13

97.6

166.7

32.2

39.6

30.1

15.3

49.2

14

58.0

225.3

18.9

18.2

31.6

13.8

35.3

Average

153.9

256.8

30.7

31.3

23.1

21.1

83.7

Standard Deviation

94.0

89.4

10.7

12.3

10.8

9.0

43.7