Robustness of hypofractionated breast radiotherapy after breast-conserving surgery with free breathing.

ABSTRACT:

Purpose

This study aimed to evaluate the robustness with respect to the positional variations of five planning strategies in free-breathing breast hypofractionated radiotherapy (HFRT) for patients after breast-conserving surgery.

Methods

Twenty patients who received breast HFRT with 42.72 Gy in 16 fractions were retrospectively analyzed. Five treatment planning strategies were utilized for each patient, including 1) intensity-modulated radiation therapy (IMRT) planning (IMRT_pure); 2) IMRT planning with skin flash tool extending and filling the fluence outside the skin by 2 cm (IMRT_flash); 3) IMRT planning with planning target volume (PTV) extended outside the skin by 2 cm in the computed tomography dataset (IMRT_ePTV); 4) hybrid planning, i.e.

SUBMITTER: Chen K 

PROVIDER: S-EPMC10644368 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature