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. Author manuscript; available in PMC: 2016 Nov 17.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2016 Apr 2;95(5):1527–1534. doi: 10.1016/j.ijrobp.2016.03.035

Fig. 2.

Fig. 2

A heat map of differences between treatment planning system values and machine measurements, broken down by machine class. Shaded boxes represent distributions that had a median or standard deviation (or both) greater than the criteria described in the text. Median differences are shaded darker than high standard deviations only for visualization purposes. N/A=not enough data were available for comparison. 6 × 6, 10 × 10, and 20 × 20 cm2 represent the field size for percentage depth dose measurements. Abbreviations: EDW = enhanced dynamic wedge; IMRT = intensity modulated radiation therapy; OAF = off-axis factor; OF = output factor; SBRT = stereotactic body radiation therapy.