Fig. 4From: Evaluation of transperineal ultrasound imaging as a potential solution for target tracking during hypofractionated radiotherapy for prostate cancera-e Relative cumulative distributions of the magnitudes of the difference vectors (scaled at isocenter) between mean predicted and mean actual (MV segmented) fiducial positions for individual patients. Predicted positions are calculated with (blue) and without (green) ultrasound tracking. f Same as in A-E with aggregate data for all patientsBack to article page