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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 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?
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