Abstract Background In this study. we aim to evaluate the cosmetic outcome differences between Intraoperative electron beam radiation therapy (IOERT) and whole breast radiotherapy (WBR) with further investigation of boosted IOERT. Methods This retrospective cohort study was conducted in two referral centers in Tehran. Iran. https://www.chiggate.com/3m-speedglas-9002nc-welding-helmet-fashion/