Table 5 Comparison between IMRT and VMAT for 39 head and neck plans with a prescription of 69.3 Gy

107.6 (103.9 - 110.3)

107.9 (104.4 - 112.7)^b+

108.0 (105.7-111.8)^ac+

106.8 (104.4- 109.2)^a+b+

107.0 (104.4 - 109.9)^c+

93.4 (88.1 - 97.8)

91.5 (85.3 - 99.1)^a+

91.0 (82.9 - 98.1)^a+c

91.9 (86.1 - 99.1)^a+

91.6 (85.4 - 98.8)^a+c

1.10 (1.07 - 1.14)

1.11 (1.06 - 1.15)^a+b+

1.12 (1.07 - 1.17)^a+c+

1.10 (1.06 - 1.14)^b+

1.11 (1.06 - 1.14)^c+

0.77 (0.22 - 0.91)

0.81 (0.26 - 0.91)^a+b+

0.83 (0.30 - 0.92)^a+c+

0.84 (0.29 - 0.93)^a+b+

0.85 (0.40 - 0.93)^a+c+

127.8 (124.0 - 135.1)

122.7 (115.6 - 130.4)^a+

123.2 (116.7-129.0)^a+c+

122.3 (117.0 - 126.4)^a+

122.1 (118.2-127.2)^a+c+

93.1 (81.7 - 97.9)

93.3 (85.5 - 97.3)^b+

87.6 (80.3 - 94.9)^a+c+

96.1 (92.2 - 99.1)^a+b+

92.0 (84.1 - 97.2)^c+

1.21 (1.12 - 1.31)

1.19 (1.14 - 1.24)^ab+

1.21 (1.14 - 1.28)^c+

1.16 (1.10 - 1.22)^a+b+

1.18 (1.10 - 1.25)^a+c+

0.67 (0.46 - 0.82)

0.69 (0.42 - 0.83)^b+

0.69 (0.49 - 0.81)^c+

0.71 (0.44 - 0.85)^a+b+

0.73 (0.50 - 0.85)^a+c+

101.2 (99.0 - 104.3)

102.6 (101.1-105.9)^a+b+

100.8 (99.5 - 102.1)

102.2 (101.0 -104.6)^a+b+

100.6 (98.9 - 101.9)^a

129.9 (106.5 - 136.3)

126.8 (114.5 - 134.6)^ab+

126.8 (112.5 - 133.0)^a

124.5 (110.7 -129.8)^a+b+

125.6 (109.1 - 132.9)^a+

90.1 (85.0 - 95.3)

94.0 (90.8 - 97.5)^a+b+

89.0 (79.2 - 92.9)

96.1 (92.5 - 98.7)^a+b+

92.5 (87.3 - 97.5)

1.22 (1.09 - 1.28)

1.20 (1.12 - 1.25)^b+

1.21 (1.12 - 1.31)^c+

1.17 (1.09 - 1.24)^a+b+

1.19 (1.09 - 1.27)^a+c+

0.70 (0.57 - 0.79)

0.73 (0.63 - 0.87)^a+b+

0.74 (0.65 - 0.81)^a+

0.76 (0.66 - 0.88)^a+b+

0.76 (0.65 - 0.87)^a+

100.1 (98.4 - 101.5)

102.4 (101.3-103.4)^a+b+

100.6 (98.9 - 102.2)

101.9 (101.1- 103.2)^a+b+

100.5 (99.8 - 101.8)

114.0 (103.9 - 134.7)

114.9 (109.6 - 128.2)^b+

112.9 (108.0 - 126.5)

113.1 (109.1 - 127.3)^b+

112.0 (106.2 - 128.3)

92.7 (73.0 - 99.5)

96.5 (91.7 - 99.3)^ab+

91.9 (83.8 - 97.9)^c+

97.9 (95.5 - 99.8)^a+b+

95.1 (87.1 - 99.2)^c+

1.11 (1.07 - 1.21)

1.13 (1.09 - 1.18)^b+

1.13 (1.09 - 1.18)^c+

1.10 (1.07 - 1.14)^b+

1.11 (1.07 - 1.15)^c+

0.64 (0.47 - 0.75)

0.71 (0.63 - 0.84)^a+

0.72 (0.64 - 0.87)^a+c

0.72 (0.64 - 0.84)^a+

0.74 (0.63 - 0.88)^a+c

99.9 (98.0 - 102.7)

102.7 (101.5-104.5)^a+b+

100.5 (99.5 - 101.5)

102.2 (101.0 -103.6)^a+b+

100.5 (99.1 - 101.8)

7.1 (3.9 - 18.2)

6.7 (3.7 - 17.0)^a+

6.6 (3.6 - 16.8)^a+c+

6.7 (3.7 - 17.0)^a+

6.6 (3.6 - 16.6)^a+c+

21.2 (10.6 - 56.6)

21.4 (10.7 - 58.2)^a+b+

21.4 (10.7 - 57.5)^a+c+

21.6 (10.7 - 58.5)^a+b+

21.5 (10.8 - 58.7)^a+c+

38.8 (3.7 - 62.9)

41.5 (5.2 - 60.4)^ab

40.1 (5.1 - 58.6)

40.1 (5.2 - 63.3)^b

39.9 (5.0 - 60.7)

39.3 (20.6 - 51.0)

44.6 (22.2 - 51.5)^a+

42.9 (18.9 - 52.5)^a

44.3 (15.0 - 51.6)^a+

43.1 (17.0 - 51.0)^a

28.6 (2.1 - 71.4)

29.1 (2.4 - 70.4)

28.3 (2.2 - 64.7)

30.4 (2.2 - 70.3)

29.8 (2.2 - 69.3)

30.2 (7.8 - 62.7)

30.7 (9.7 - 55.7)^a+b+

29.5 (9.7 - 55.8)

30.3 (9.6 - 55.7)^ab+

29.2 (9.8 - 56.0)

48.1 (8.7 - 100.0)

49.6 (11.0 - 92.9)^a+b+

46.6 (12.1 - 93.0)

48.2 (10.3 - 93.2)^ab+

45.6 (10.4 - 93.3)

37.4 (33.1 - 44.3)

36.3 (33.2 - 44.6)^ab+

36.1 (32.7 - 44.0)^ac+

35.1 (32.5 - 41.0)^a+b+

35.3 (32.6 - 42.8)^a+c+

649.2 (458–802)

370.5 (313–524)^a+b+

372.9 (326–482)^a+c+

393.1 (322–558)^a+b+

393.6 (320–538)^a+c+