Parameter

6 MV

6 XFFF

10 MV

10 XFFF

15 MV

(TPR20/10) Measured/Cal.

0.6660/0.67

0.6317/0.63

0.7394/0.7

0.7075/0.71

0.7637/0.77

Avg. Jaw Transmission (%)

0.4581

0.2892

0.5457

0.3179

0.5574

MLC Interleaf Transmission (%)

Average/Maximum

1.749/2.022

0.982/1.938

1.969/2.266

0.939/1.173

2.052/2.344

DLG (cm)

2.1

1.8

2.4

2.3

2.5

Cr Plane Beam Symmetry (%)

At Dmax/10 cm Depth

5 × 5

100.2/100.2

100.2/100.1

100.4/100.4

100.2/100.2

100.4/100.3

10 × 10

100.3/100.2

100.3/100.2

100.4/100.3

100.2/100.3

100.4/100.3

30 × 30

100.3/100.2

100.3/100.4

100.4/100.4

100.3/100.4

100.7/100.5

Cr Plane Beam Flatness (%)

At Dmax/10 cm Depth.

5 × 5

0.28/1.18

-

0.73/1.57

-

1.02/1.58

10 × 10

0.70/2.30

-

1.20/2.40

-

1.00/2.30

30 × 30

1.90/1.90

-

2.00/1.70

-

2.80/2.60

Radiation Penumbra flat Beam

(20% - 80%) for 10 × 10 cm2

Dmax (Lt/Rt)*

0.55/0.5

-

0.66/0.65

-

0.67/0.68

10 cm (Lt/Rt)*

0.72/0.71

-

0.76/0.75

-

0.77/0.78

Surface Dose (%) (With PPC05)

5 × 5

57.4

66.4

37.0

47.6

32.3

10 × 10

61.1

68.9

42.5

50.6

38.6

15 × 15

66.3

71.9

49.1

54.0

46.5

20 × 20

69.5

73.5

54.1

56.8

52.5

30 × 30

75.0

77.2

62.2

59.6

61.5