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\begin{abstract}  \textbf{Purpose/objective}: In recent years there has been considerable  interest in the use of gold nanoparticles (GNPs) combined with  radiotherapy to improve tumor control. It has been demonstrated how the 
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simulations. In addition to the improved treatment  efficacy, the possibility of a \textbf{short course of fractionation} in  combination with GNPs was also investigated.  \end{abstract}