Response to the comments on "The Feasibility Study of a Hybrid Coplanar Arc Technique versus Hybrid Intensity-modulated Radiotherapy in Treatment of Early-stage Left-sided Breast Cancer with Simultaneous-integrated Boost. J Med Phys 2017;42:1-8"

Where respiratory gating or breath control is not implemented, the hybrid plans may be considered for patients who underwent breast-conserving surgery. The feasibility study of a hybrid coplanar arc technique versus hybrid intensity-modulated radiotherapy in treatment of early-stage left-sided breast cancer with simultaneous-integrated boost. Volumetric modulated arc therapy improves dosimetry and reduces treatment time compared to conventional intensity-modulated radiotherapy for locoregional radiotherapy of left-sided breast cancer and internal mammary nodes.