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  • Title: Corrections to megavoltage depth-dose values due to reduced backscatter thickness.
    Author: Goede MR, Anderson DW, McCray KL.
    Journal: Med Phys; 1977; 4(2):123-6. PubMed ID: 403397.
    Abstract:
    Multiplicative corrections for percent depth-dose values were measured for situations with nonmaximal backscatter because of reduced thickness of the irradiated phantom. Data were obtained for common clinical field sizes for a 60Co beam as well as beams from a 2.5-MV and a 4.0 MV generator. Functional forms, which summarize the results and include field size effects, depth, and thickness of the backscatter medium as variables, were obtained by regression analysis.
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