The Impact of Maximum Rectal Distention and Tandem Angle on Rectal Dose in 3D Planned Gynecologic High-Dose-Rate Brachytherapy for Locally Advanced Cervical Cancer

摘要

ObjectiveComputed tomography (CT)-based treatment planning for cervical cancer has allowed investigation into the volumetric radiation dose delivered to the rectum. The goal of intracavitary brachytherapy is to maximize the tumor dose while decreasing the dose to normal tissue like the rectum. We investigated the effects of tandem angle and maximum rectal distention on rectal dose delivered in HDR brachytherapy for locally advanced cervical cancer.