Comparison Between Hybrid Direct Aperture Optimized Intensity-Modulated Radiotherapy and Forward Planning Intensity-Modulated Radiotherapy for Whole Breast Irradiation

Compared with FP-IMRT, hDAO-IMRT provided dosimetric advantages, significantly reducing the size of the hot spot and slightly improving the coverage of the tumor cavity. In addition, hDAO-IMRT required less planning time and was less dependent on the planner's ability.