The Impact of Cardiac Sparing Techniques on Heart and Lung Dose in the Setting of Partial Breast Irradiation: A Dosimetric Follow-up to the IMPORT Low Trial

The IMPORT LOW trial demonstrated that for women with low-risk early breast cancer (BC), partial breast irradiation (PBI) is associated with non-inferior local control and improved cosmetic outcomes compared to whole breast radiotherapy (WBRT). As this trial did not employ cardiac-sparing techniques such as prone positioning or deep inspiratory breath hold (DIBH), we hypothesized that a combination of these approaches may further reduce dose to...