Table 3 Dosimetric differences between planned dose and delivered dose calculating from CBCT

GTV

D95 (cGy)

228.6 ± 3.8

230.1 ± 5.0

227.8 ± 6.8

226.6 ± 6.3

228.5 ± 7.1

230.3 ± 9.9

0.83

D90 (cGy)

233.2 ± 3.6

235.0 ± 5.1

231.6 ± 7.5

224.6 ± 23.3

232.9 ± 7.1

227.1 ± 23.4

0.57

CTV

V110

29.3 ± 13.0

32.0 ± 14.0

28.9 ± 14.3

28.8 ± 13.9

30.3 + 14.7

30.1 + 14.2

1.00

D95 (cGy)

188.6 ± 3.0

189.9 ± 4.5

188.1 ± 4.7

187.5 ± 4.5

188.0 ± 4.5

189.1 ± 5.0

0.86

D90 (cGy)

192.8 ± 2.7

194.5 ± 3.7

192.7 ± 5.4

193.1 ± 4.9

193.0 ± 4.8

194.6 ± 3.3

0.83

D1 (cGy)

Brainstem

153.6 ± 11.2

150.1 ± 11.2

150.1 ± 15.8

151.6 ± 17.4

149.7 ± 16.6

152.1 ± 16.8

1.00

Cord

130.3 ± 10.4

130.3 ± 6.3

133.7 ± 16.2

133.4 ± 11.6

130.5 ± 13.6

137.3 ± 16.0

0.79

Right parotid

D50 (cGy)

74.5 ± 3.4

79.9 ± 5.0

77.8 ± 4.5

81.6 ± 5.3

82.8 ± 6.2

82.2 ± 3.7

0.002

Dmean (cGy)

95.6 ± 5.4

101.9 ± 5.3

99.1 ± 6.4

102.6 ± 6.8

106.1 ± 8.0

101.2 ± 4.4

0.012

V26

36.5 ± 3.0

41.5 ± 3.8

38.9 ± 4.3

41.3 ± 5.0

44.0 ± 4.5

42.3 ± 3.5

0.003

V32

29.3 ± 4.9

33.7 ± 4.7

31.2 ± 5.2

35.3 ± 5.2

36.7 ± 4.6

36.0 ± 4.0

0.006

Left parotid

D50 (cGy)

74.9 ± 2.6

80.0 ± 3.7

77.3 ± 5.7

76.4 ± 9.2

83.7 ± 7.3

82.0 ± 6.3

0.017

Dmean (cGy)

94.8 ± 8.1

101.4 ± 10.2

99.6 ± 8.2

101.9 ± 7.6

104.6 ± 9.8

103.3 ± 7.6

0.18

V26

34.8 ± 3.3

39.8 ± 5.3

39.0 ± 2.7

40.5 ± 5.5

43.6 ± 6.4

42.9 ± 4.9

0.02

V32

27.5 ± 5.5

31.2 ± 6.7

31.2 ± 5.7

32.7 ± 5.9

35.1 ± 7.2

33.6 ± 7.6

0.17