Fig. 4
DVH parameter differences for the OARs, for all patients, as boxplots are shown. V70Gy V60Gy, V50Gy for a rectum and b bladder, relative to the rectum and bladder volume, respectively, and D2% for c femoral heads, relative to the prescribed dose. The results using orig. and red. PTV margins are plotted in blue and in red, respectively. The boxplots indicate the spread of the central 50% of the data, denominated as the IQR (interquartile range). The median, the 25th and the 75th percentiles are also shown. The upper and lower whiskers represent data outside the IQR but inside the range defined by 1.5 × IQR. Outliers are defined as values outside the whiskers’ range