Respiratory motion remained small during postoperative whole-breast radiotherapy.
Mean breast target displacement was below 1.3 mm in every direction, with calculated respiratory margins of approximately 1 mm.
Mean breast target displacement was below 1.3 mm in every direction, with calculated respiratory margins of approximately 1 mm.
Five-fraction helical tomotherapy achieved favorable organ sparing, while the planning target volume-to-breast ratio was associated with higher ipsilateral breast dose.