Variations in Rectal Volumes and Dosimetry Values Including NTCP due to Interfractional Variability When Administering 2D-Based IG-IMRT for Prostate Cancer

Figure 4

NTCPs for rectum: predictions based on the initial plan and on-treatment CBCTs analyses (8 CBCTs/patient) for combined grade ≥ 2 rectal toxicity from the QUANTEC update using the LKB model.