VOI/patient

Pt1

Pt2

Pt3

Pt4

Pt5

Pt6

Pt7

Pt8

Pt9

Pt10

Mean ± ∆

P value

PTV54

(D95%)

PBS

55.3

54.3

54.6

54.6

54.6

54.5

54.1

54.0

54.2

54.0

54.4 ± 0.4

0.08

VMAT

53.9

53.7

54.6

54.0

54.2

53.5

54.0

54.0

54.3

54.7

54.1 ± 0.4

PTV60

(D95%)

PBS

60.7

60.1

60.2

60.3

60.2

59.6

59.7

60.3

60.2

60.1

60.1 ± 0.3

0.07

VMAT

59.9

59.1

60.2

60.2

60.1

59.5

60.0

60.0

60.0

59.7

59.9 ± 0.3

CTV54

(D98%)

PBS

55.0

53.9

54.4

54.9

54.5

54.2

54.1

53.9

54.1

54.2

54.3 ± 0.4

0.02

VMAT

54.4

55.2

54.7

54.9

54.8

54.3

54.0

55.0

55.5

55.8

54.9 ± 0.6

CTV60

(D98%)

PBS

60.7

60.2

60.1

60.7

60.6

60.1

59.9

60.3

60.3

60.4

60.3 ± 0.3

0.11

VMAT

60.4

60.6

60.2

60.8

60.9

60.1

60.0

61.1

61.0

60.7

60.6 ± 0.4

Brainstem

(D.max)

PBS

33.7

30.5

37.0

42.3

31.3

47.4

42.9

38.0

23.5

30.8

35.7 ± 7.2

0.92

VMAT

39.4

38.1

38.8

33.1

25.9

37.0

33.7

33.8

35.7

44.6

36.0 ± 4.9

Cord

(D.max)

PBS

44.8

41.7

43.8

41.6

41.0

43.7

41.2

36.2

35.8

32.8

40.3 ± 4.0

0.78

VMAT

42.6

42.7

36.5

37.7

44.7

37.2

34.5

36.6

42.0

43.8

39.8 ± 3.7

Oral cavity

(D.mean)

PBS

4.2

2.1

6.9

5.9

1.3

7.4

2.0

3.2

1.6

2.1

3.7 ± 2.3

< 0.001

VMAT

19.9

15.6

16.3

23.1

16.6

24.1

16.0

20.1

17.7

16.5

18.6 ± 3.1

Contralateral submandibular

(D.mean)

PBS

29.5

43.2

24.5

30.9

33.8

36.0

29.4

36.8

39.8

29.5

33.3 ± 5.7

0.71

VMAT

29.0

36.4

20.3

30.1

32.4

51.2

29.1

29.3

30.6

33.6

32.2 ± 7.9

Contralateral Parotid

(D.mean)

PBS

16.2

17.9

12.2

13.0

15.4

19.1

16.3

12.8

20.9

9.6

15.4 ± 3.5

0.004

VMAT

19.7

18.1

25.0

17.7

18.7

22.4

19.5

15.3

20.3

17.9

19.5 ± 2.7

Ipsilateral Parotid

(D.mean)

PBS

20.4

27.8

27.8

25.6

23.7

31.1

24.1

28.2

39.1

20.4

26.8 ± 5.5

0.56

VMAT

26.1

25.7

37.0

26.1

25.4

22.6

22.7

32.8

26.9

22.3

26.8 ± 4.7

Larynx

(D.mean)

PBS

29.0

31.1

27.3

27.1

25.5

31.3

27.3

24.5

23.0

25.5

27.2 ± 2.7

0.005

VMAT

32.4

33.7

38.1

28.9

33.3

27.3

34.6

27.1

34.7

28.1

31.7 ± 3.9