Table 1 Selected median (range) dosimetric indices of the optimized plans

PTV V_95%

99.2

97.9

98.3

98.3

97.2

95.2

95.8

[%]

(98.3-99.7)

(93.1-99.1)

(95.0-99.3)

(95.2-98.7)

(96.0-99.3)

(90.4-97.7)

(93.1-97.3)

CTV V_95%

100.0

99.7

99.8

99.7

99.5

98.8

99.2

[%]

(99.9-100.0)

(97.3-100.0)

(98.5-100.0)

(98.8-100.0)

(99.2-99.8)

(95.5-99.6)

(97.8-100.0)

PTV HI

5.9

7.8

7.7

7.8

11.2

13.9

12.5

[p p]

(4.5-8.1)

(6.0-11.1)

(5.5-10.3)

(6.6-10.8)

(6.3-12.9)

(9.9-14.9)

(9.5-13.8)

CTV HI

4.0

4.8

4.6

5.0

7.9

9.4

8.7

[p p]

(3.4-5.0)

(3.6-8.2)

(3.7-7.7)

(4.5-7.3)

(5.1-9.3)

(7.0-12.5)

(6.3-9.9)

PTV CI

0.85

0.87

0.87

0.86

0.78

0.79

0.78

[−]

(0.81-0.91)

(0.80-0.91)

(0.82-0.91)

(0.82-0.89)

(0.70-0.88)

(0.71-0.87)

(0.71-0.84)

D_near-max brainstem

n/a

53.9

52.9

52.2

n/a

61.0

60.2

[Gy(RBE) ]

(38.8-55.0)

(35.6-54.2)

(36.9-54.3)

(45.5-63.1)

(46.3-62.6)

D_max chiasm

n/a

54.0

53.9

53.8

n/a

58.1

59.9

[Gy(RBE) ]

(0.0-54.2)

(0.0-54.1)

(52.6-54.1)

(0.0-60.1)

(59.0-60.2)

D_max ips. optic nerve

n/a

54.0

53.8

53.8

n/a

59.7

60.1

[Gy(RBE) ]

(0.0-54.2)

(0.0-54.2)

(40.6-54.1)

(0.0-60.3)

(50.9-60.4)

D_max con. optic nerve

n/a

42.9

43.3

39.2

n/a

51.2

42.5

[Gy(RBE) ]

(0.0-54.2)

(0.0-54.2)

(0.0-53.9)

(0.0-60.5)

(0.0-59.8)