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MU examples
Treat 2 GY to the centre of a volume ||pair
The Field size is 20*20cm
2
Patient separation is 18 cm
Treat with SSD= 100 cm, 10 MV
Use the Depth dose chart:
PDD*output(9 cm, 20)=80.9cGy/100MU
Dose from each field is 1 Gy
To deliver 1Gy : 100cGy/80.9(cGy/100MU)*100 = 123.6
MU ie 124 MU
from each beam