Dosimetric comparison of hybrid IMRT and different arc techniques VMAT after breast-conserving surgery for left-sided breast cancer.

Purpose: This study aimed to comprehensively compare the dosimetric characteristics of three different radiotherapy techniques-hybrid intensity-modulated radiotherapy (hy-IMRT), tangential volumetric-modulated arc therapy (t-VMAT), and continuous volumetric-modulated arc therapy (c-VMAT)-used after breast-conserving surgery for left-sided breast cancer in the target area and organs at risk (OARs) after breast-conserving surgery for left-sided breast cancer. This evaluation aims to provide a solid basis for individualized radiotherapy planning in clinical practice.

Methods: Twenty female patients who underwent breast-conserving surgery for left-sided breast cancer were retrospectively selected.