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Table 3 Required PTV margin (in mm) in overall and localized areas between the two groups

From: Effectiveness of personalized open-face mask combined with styrofoam fixation in radiotherapy treatment of head and neck cancers: a prospective randomized controlled trial

 

Open-face masks group

Control group

X

Y

Z

X

Y

Z

Overall

Σ

0.78

1.15

0.95

0.83

1.29

1.05

δ

0.36

0.36

0.26

0.39

0.51

0.36

PTV margin

2.20

3.12

2.57

2.35

3.58

2.86

local

Σ

1.21

1.39

0.99

0.92

1.86

1.26

δ

0.41

0.50

0.34

0.33

0.56

0.40

PTV margin

3.32

3.82

2.71

2.53

5.04

3.43

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Radiation Oncology

ISSN: 1748-717X

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