| CPC A61N 5/1075 (2013.01) [A61N 5/1031 (2013.01); A61N 5/1071 (2013.01); A61N 2005/1034 (2013.01); A61N 2005/1035 (2013.01); A61N 2005/1076 (2013.01); A61N 2005/1089 (2013.01)] | 20 Claims |
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1. A system, comprising:
a storage device storing a set of instructions for modeling a radiation source configured to emit radiation of an energy spectrum that includes a plurality of energy levels; and
at least one processor in communication with the storage device, wherein when executing the set of instructions, the at least one processor is configured to cause the system to perform operations including:
obtaining an initial multi-source model of the radiation source, wherein the initial multi-source model includes an initial phase space file that includes information of a plurality of simulated particles of the plurality of energy levels;
estimating, based on the initial phase space file, a plurality of component percentage depth-dose (PDD) curves in a phantom, wherein each of the plurality of component PDD curves corresponds to one of the plurality of energy levels;
obtaining a measured PDD curve in the phantom corresponding to the radiation of the energy spectrum traversing the phantom;
for each of the plurality of energy levels, determining, based on the plurality of component PDD curves and the measured PDD curve, a weight for the each energy level indicating a percentage of simulated particles of the each energy level, among the plurality of simulated particles, present in the radiation; and
determining a target multi-source model of the radiation source corresponding to the energy spectrum based at least in part on the initial multi-source model and the weights.
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