The primary goal of this study is to assess the impact of an app that reminds patients treated with hypofractionated radiotherapy (HF-RT) for prostate cancer to drink water prior to each radiotherapy session on the number of bladder volumes \<200 ml during the HF-RT course and to demonstrate that this number is lower than without using an app (historical control group).
Histologically proven prostate cancer
Indication for definitive HF-RT
Possession of and ability to use a smartphone
Bladder volume at CT-simulation <200 ml
Radiotherapy of pelvic lymph nodes
Expected non-compliance
University Hospital Schleswig-Holstein
Lead sponsor
University of Southern Denmark
Collaborator
University of the Basque Country (UPV/EHU)
Collaborator