Tube Voltage/kV

Average Energy/keV

Resolution/%

Additional Filtration

70

60

22%

2.5 mm∙Cu

100

87

22%

2.0 mm∙Sn + 0.5 mm∙Cu

125

109

21%

4.0 mm∙Sn + 1.0 mm∙Cu

240

211

18%

5.5 mm∙Pb + 2.0 mm∙Sn + 0.5 mm∙Al