A 30 x 30 x 30 cm3 water phantom is centered at isocenter in a
pair of Varian 6 MV beams, a right lateral and a left lateral. Each
field has a collimator setting of 12 cm x 18 cm and is further
collimated to a 10 cm x 14 cm using the MLC. What are the MU
settings of each field if a total dose of 200 cGy is to be
delivered using a relative weighting of 3:2 with the right lateral
having the higher weightage and the dose is prescribed to the 100%
isodose line?
A 30 x 30 x 30 cm3 water phantom is centered at isocenter in a pair of Varian 6 MV beams, a right lateral and a left lat
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