A comparison study between gross tumor volumes defined by preoperative magnetic resonance imaging postoperative specimens and tumor bed for radiotherapy after breast-conserving surgery

摘要

Background:The identification and contouring of target volume is important for breast-conserving therapy. The aim of the study was to compare preoperative magnetic resonance imaging (MRI), postoperative pathology, excised specimens’ (ES) size, and tumor bed (TB) delineation as methods for determining the gross tumor volume (GTV) for radiotherapy after breast-conserving surgery (BCS).