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  • Title: Buildup region and skin-dose measurements for the Therac 6 linear accelerator for radiation therapy.
    Author: Tannous NB, Gagnon WF, Almond PR.
    Journal: Med Phys; 1981; 8(3):378-81. PubMed ID: 6798394.
    Abstract:
    Buildup and surface-dose measurements were taken for the 6 MV photon beam from a Therac 6 linear accelerator manufactured by Atomic Energy of Canada Limited (AECL) with and without a lucite blocking tray in place. Further measurements were made with a copper filter designed to reduce secondary electrons emitted by photon interactions with the Lucite tray. The results are discussed in relation to skin-sparing for radiation therapy patients. The measurements were made with a fixed volume PTW parallel-plate ionization chamber and corrected to zero-chamber volume. The results were found to be consistent with similar measurements taken with a variable volume extrapolation chamber.
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