Skip to main content

Table 2 Volume changes between the initial planning CT (iCT) and the repeat CT (rCT) at 23rd fraction

From: A modified VMAT adaptive radiotherapy for nasopharyngeal cancer patients based on CT-CT image fusion

Unit(cm3)

Volumes in iCT

Volumes in rCT

Sig (p)

GTV

78.83 ± 38.42

71.44 ± 37.46

0.42

Brainstem

28.77 ± 2.89

26.43 ± 3.03

0.22

Cord

25.52 ± 2.44

24.57 ± 2.30

0.44

Mandible

89.49 ± 14.33

89.23 ± 12.32

0.58

Left parotid

19.91 ± 4.89

11.80 ± 2.79

<0.01

Right Parotid

21.58 ± 6.16

13.29 ± 4.17

<0.01