Quantification of the Volume Change and Interfractional Motion and Volume of the Prostate for Prostate Cancer Patients undergoing Concurrent Androgen Deprivation Therapy and Intensity Modulated Radiation Therapy

To evaluate the volume change and interfractional motion of the prostate in prostate cancer patients undergoing concurrent androgen deprivation therapy (ADT) and intensity modulated radiation therapy (IMRT). 18 patients receiving concurrent ADT and IMRT underwent sequential CT scan of the pelvis during treatment (2 times per week) using a CT-on-rails system. The prostate, seminal vesicles (SV), bladder, rectum, and pelvic bones were contoured...