Fig. 1.

Bland-Altman plots of the difference in match for each observer by the mean of all observers (for each CBCT scan that is registered) for prostate soft tissue. Each coloured dot represents a single radiation therapist each. Note that due to ties, it does not always appear as though there are 10 dots for each site. The red line is the overall mean difference, blue line is the 0 difference (for reference) and the green lines are the upper and lower limits of agreement. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)