Figure 2From: Total error shift patterns for daily CT on rails image-guided radiotherapy to the prostate bedBubble plot of the total error combinations in (a) the y-axis and x-axis and (b) the z-axis and y-axis for all 17 patients. The size of the bubble is proportional to the number of observations. The largest bubble represents 10 observations, while the smallest one represents 1.Back to article page