Fig. 2From: Prostate deformation during hypofractionated radiotherapy: an analysis of implanted fiducial marker displacementNumbers of observations for FM separately and RBEavg for all cases over the whole treatment. *Visualization of 16% missing values (compared with the other FMs) because FM4 was not used for tracking due to its RBE being consistently > 2.5 mm. The visualization simplifies the situation so that missing values are only given in the range 2–3 mm. Numbers above the columns for values > 2 show the sum of occurrences for FM1-4Back to article page