Figure 1
From: Impact of the frequency of online verifications on the patient set-up accuracy and set-up margins
Frequency of set-up errors larger than threshold (three-dimensional vector) for all scenarios and all fractions. The frequency of online verifications is plotted on the horizontal axis (0%, no online verification; 20%, online verification once a week; 50%, online verification every other day), and the percentage of fractions with set-up errors larger than 3 mm, 5 mm or 10 mm on the vertical axis.