X-ray machine

Total filtration (mm Al)

kVp

Predicted output

Measured output

Output ratios

1

3.2

60

26.16

26.10

1.00

70

37.48

35.80

1.04

80

49.93

48.13

1.03

100

79.71

73.94

1.07

2

4.4

60

19.51

21.70

0.89

70

28.91

31.04

0.93

80

39.88

43.75

0.91

100

65.47

72.95

0.89

3

5.5

60

14.36

16.66

0.86

70

22.07

25.33

0.87

80

31.31

35.05

0.89

100

53.42

59.25

0.90

4

3.5

60

24.58

30.16

0.81

70

35.47

41.61

0.85

80

47.93

56,40

0.84

100

76.44

88.15

0.86

5

3

60

27.90

32.94

0.84

70

39.68

44.99

0.88

80

53.03

56.25

0.94

100

83.25

85.70

0.97