The aim of the study was to quantify planned doses to the heart and specific cardiac substructures in free-breathing adjuvant three-dimensional radiation therapy (3D-CRT) and tangential intensity modulated radiotherapy (t-IMRT) for left-sided node-negative breast cancer, and to assess the differences in planned doses to organs at risk according to patients’ individual anatomy, including breast volume.

中文翻译：

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与切向调强放疗相比，辅助三维适形放疗中乳房大小和心脏亚结构剂量

该研究的目的是量化自由呼吸辅助三维放射治疗 (3D-CRT) 和切向调强放射治疗 (t-IMRT) 对左侧淋巴结阴性乳房的心脏和特定心脏亚结构的计划剂量。癌症，并根据患者的个体解剖结构（包括乳房体积）评估风险器官的计划剂量差异。