... (Dmax and Dmean, respectively), and volumes (percentage and absolute) of rectum receiving 30 Gy, 40 Gy, 50 Gy, 60 Gy, and 70 Gy. For each patient and each technique, DVHswere compared for both ... impact of four different rectum contouring techniques and rectaltoxicities in patients with treated with 3D conformal radiotherapy (3DCRT).Methods: Clinical and dosimetric data were evaluated for ... treated with 3D conformal radiotherapy: a dose-volume analysis Cem Onal*, Erkan Topkan†, Esma Efe†, Melek Yavuz†, Serhat Sonmez† and Aydin Yavuz†Address: Department of Radiation Oncology,...