Fig. 3From: Three-dimensional conformal arc radiotherapy using a C-arm linear accelerator with a computed tomography on-rail system for prostate cancer: clinical outcomesKaplan-Meier estimates of freedom from biochemical failure, as stratified by NCCN risk. Biochemical failure was defined as a rise of at least 2.0 ng/ml beyond the prostate-specific antigen nadirBack to article page