Monte Carlo

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Computer simulations generated using the Monte Carlo technique precisely model the interactions of billions of individual ionising particles. Rather than relying on empirical predictions, density corrections or scatter estimates, Monte Carlo calculations involve exactly simulating the transport of each individual ionising particle through the whole geometry of interest. When sufficiently large numbers of particles are simulated, then Monte Carlo simulations allow important macroscopic quantities such as absorbed dose to be calculated accurately. Monte-Carlo methods have been developed to model the radiation transport in the linear accelerator and patient geometry enabling calculation of the absorbed dose and are considered the ‘gold standard’ radiotherapy dose calculation.

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