Figure 3From: Total error shift patterns for daily CT on rails image-guided radiotherapy to the prostate bedAverage total error vectors in (a) the y-axis and x-axis (anteroposterior view) and (b) the z-axis and y-axis (lateral view) for all 17 patients. The average vectors pointed towards six of the eight possible octants. Vectors sharing the same colored arrowhead point to the same octant (for example, patients 7, 9, 11, 13, and 16). Patient numbering as in Table 2.Back to article page