Research Article
The Study of Dosimetric Characteristics of the XHA600D Medical Linear Accelerator Based on a Monte Carlo Code
Table 5
The simulated and measured profiles of penumbras (cm) of FF and FFF beams for different fields at 10 cm depth (The uncertainties of simulated penumbras in FF mode of 4 × 4, 6 × 6, 8 × 8, 10 × 10, 15 × 15, 20 × 20, 25 × 25, 30 × 30 cm2 fields were as follows: 0.4%, 0.8%, 0.6%, 0.8%, 1.2%, 1.6%, 1.8%, 2% (k = 2). The uncertainties of simulated penumbras in FFF mode of 4 × 4, 6 × 6, 8 × 8, 10 × 10, 15 × 15, 20 × 20, 25 × 25, 30 × 30 cm2 fields were as follows: 0.8%, 0.5%, 0.6%, 0.8%, 1%, 1.2%, 1.4%, 1.6% (k = 2)).
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