Assume the initial treatment portals are AP/PA; after about how many fractions does the typical lung cancer patient start receiving oblique boost treatments?

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Initial field arrangements are generally prescribed between 4000 and 4500 cGy.Boost fields follow in various combinations until tumoricidal doses are achieved.At standard fractionation of 180 to 200 cGy per day,oblique boost treatments would begin after about the twentieth treatment.

Assume the Initial Treatment Portals Are AP/PA; After About How