Table 1.
Fraction by weight of each element used in Monte Carlo simulations for various Gd concentrations.
Figure 1.
Depth dose curves simulated for a 6 MV FFF beam with (A) Gd and (B) Au slabs of various concentrations and water only.
In the figure, the legends are listed in the order of dose in the slab: from 20 mg/mL, the highest, to water, the lowest.
Figure 2.
Dose enhancement versus concentration for (A) Gd and (B) Au for 6 MV FFF and flattened beams and Ir-192 source.
Figure 3.
Energy spectra and mean energy versus off-axis distance for 6 MV FFF and flattened beams.
(A) Energy spectra for 6 MV FFF and flattened beams at depth of 1.8 cm and depth of 8 cm and (B) mean energy versus off-axis distance for the 10×10 cm2 beams at the different depths for 6 MV FFF (solid lines) and flattened beams (dash lines).
Figure 4.
Dose enhancement comparison for 6 MV FFF and flattened beams at 1.8 cm and 8 cm depth.