Comparison of User-Directed and Automatic Mapping of the Planned Isocenter to Treatment Space for Prostate IGRT

Figure 9

Frequency histograms for Δ𝑥,Δ𝑦, and Δ𝑧. The averages of the unsigned clinical values for Δ𝑥,Δ𝑦, and Δ𝑧, respectively, are 1.06 mm, 1.79 mm, and 2.54 mm. The averages of the automatic values are 0.58 mm, 1.14 mm, and 1.05 mm. Two clinical values are outside the Δ𝑦 axis range and seven values are outside the Δ𝑧 range. All of the automatic results are within the ranges of all axes.

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