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. 2015 Nov 6;42(12):6776–6783. doi: 10.1118/1.4934824

FIG. 6.

FIG. 6.

Gantry (θ) and couch (ϕ) angle dependence of the tracking performance. Each bar indicates average tracking error on an image sequence acquired at a specific (θ, ϕ) combination. Figures 6(a) and 6(b) are the same bar plot displayed in two different orientations for easy visualization.