Dose errors

MLC errors (mm)

Gantry Angle errors (˚)

Col Angle errors (˚)

−1%

−3%

−5%

1%

3%

5%

−0.25

−0.5

0.25

0.5

1.5

2.5

1

2

3

1

4

3D Gamma index

100

99.09

96.79

100

99.39

97.69

99.99

98.67

99.99

98.87

77.37

69.26

99.9

98.4

95.63

100

100

Average 3D

gamma

PTV

0.51

1.33

2.15

0.43

1.19

1.92

0.43

0.88

0.45

0.84

2.31

3.62

0.08

0.14

0.19

0.02

0.04

Rectum

0.33

0.7

1.13

0.28

0.57

1.04

0.49

0.9

0.51

0.9

2.53

4.11

0.23

0.39

0.54

0.03

0.03

Bladder

0.27

0.59

0.92

0.19

0.66

0.87

0.46

0.88

0.48

0.86

2.46

4.01

0.17

0.27

0.36

0.02

0.03

%

difference

PTV

D95

−1.07

−3.07

−5.08

0.86

2.96

4.92

−1.49

−3.17

1.53

2.96

8.25

11.77

−0.03

−0.24

−0.22

0.02

0.07

Rectum

D50

−1.23

−3

−4.83

0.73

3

4.69

−2.11

−4.05

2.23

4.49

14.26

29.05

−0.34

−0.78

−0.68

0.02

0

D60

−1.3

−3.25

−8.07

0.91

2.86

4.50

−2.20

−4.76

2.09

3.84

10.39

17.33

−0.02

−0.04

−0.01

0.02

0.04

D70

−1

−2.28

−4.24

0.57

2.24

3.99

−1.15

−2.06

1.19

2.69

13.92

24.77

−0.26

−0.21

−0.37

0

0.02

D74

−1.51

−2.63

−2.74

1.27

2.82

3.97

−1.27

−2.25

1.42

2.57

8.11

18.83

−0.15

0.04

−0.08

0.09

0.18

Bladder

D60

−0.85

−2.65

−5.66

0.5

1.87

3.05

−1.67

−3.88

1.44

2.84

8.61

14.21

0.04

−0.09

0.09

0.01

−0.02

D70

−1.12

−7.24

−11.0

0.64

2.31

3.53

−1.9

−6.57

1.65

2.85

8.72

16.11

−0.15

−0.21

−0.09

−0.02

0

D74

−0.12

−0.12

−0.12

0.32

5.82

10.39

−0.12

−0.12

1.21

5.57

14.7

21.03

−0.02

0.01

0.06

−0.01

−0.04