Assessment of Daily Replanning and Geometrical Variation of High-dose-rate Brachytherapy for the Prostate

Background: The present study aimed to estimate geometric changes in applicators and prostate over 3 days in patients with high-dose-rate brachytherapy (HDR-BT) and to assess the need for daily replanning. Patients and Methods: This study retrospectively investigated 18 patients who underwent HDR-BT as monotherapy from February 2016 to October 2018. Results: Without replanning, the planning target volume coverage significantly worsened on day 2...