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Fig. 3.
DVH for Harmony Search in integer mode
Fig. 4.
DVH for Harmony Search in floating point mode
For HDR brachytherapy treatment units that only support integer dwell times, it
would make sense to optimize only in integer mode. Not only is it slightly faster (for
Harmony Search), but also produces a better result for the optimization. However, if
the optimization for floating point mode were continued with more iterations and the
constraints were pushed harder, the dose to the prostate and urethra would fall.
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