Advances in research on organ-at-risk protection in pelvic tumor external beam radiotherapy
The simultaneous objectives of destroying tumor cells while protecting normal pelvic organs present a dual clinical and technical challenge within the realm of pelvic tumor radiotherapy.This article reviews the latest literatures,focusing on technological innovations in key aspects of radiotherapy such as positioning,planning,and delivery.These include positioning fixation techniques,organ-at-risk avoidance irradiation,non-coplanar irradiation techniques,as well as organ displacement protection and image-guided adaptive techniques.It summarizes and discusses the research progress made in the protection of critical organs during pelvic tumor radiotherapy.The paper emphasizes technological advancements in the protection of critical organs throughout the processes of radiotherapy positioning,planning,and implementation,aiming to provide references for further research on the protection of critical organs in the external irradiation treatment of pelvic tumors.
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