Table 2: Relative absorbed dose values for longitudinal irradiation.

Field size (cm2)

Relative absorbed dose (%)

1 cm deep

Peak

10 cm deep

5 × 5

95.16

100.00

73.70

3 × 3

89.00

92.31

67.25

2 × 2

76.62

80.95

51.39

1 × 1

67.28

69.23

45.27