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Experimental and theoretical profiles (a) at the beam axis entrance, (b) laterally, and (c) at the beam axis exit. Boxes = TLD data, dots = MC data, black line = Acuros XB data, and red dotted line = AAA. The error bars indicate 1 standard deviation for each TLD. The 0-mm depth is at the surface–air interface; the 15-mm depth is at the phantom–air cavity interface. Abbreviations: AAA = analytical anisotropic algorithm; MC = Monte Carlo; TLD = thermoluminescent dosimeter.
