Dose Course 2018_Flipping book
13
Open field depth doses 6 MV
Depth dose curves normalized to the output at 10 cm depth of the 10cm x 10cm field.
Ratio, d(i), between calculated and measured dose per monitor unit values
1.100
1.8
5x5 10x10 15x15 20x20
5x5/Meas
10x10/Meas
1.6
1.075
15x15/Meas
20x20/Meas
5x5/Calc
10x10/Calc
1.4
1.050
15x15/Calc
20x20/Calc
1.2
1.025
1.0
1.000
d(i)
0.8
Dose (%)
0.975
0.6
0.950
0.4
0.925
0.2
0.900
0.0
0
2.5
5
7.5
10
12.5
15
17.5
20
22.5
25
0
2.5
5
7.5
10
12.5
15
17.5
20
22.5
25
Depth (cm)
Depth (cm)
MiD
/)(
c
c
D
c MiD M ref /) (
c
d
i
)( =
/)(
m
m
D
M ref /) (
m
m
Dublin 2018
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