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Table 3 The mean and standard deviation of Dw and Dm in dose-volume indices calculated with Monte Carlo for 10 bone target cases

From: Clinical evaluation for the difference of absorbed doses calculated to medium and calculated to water by Monte Carlo method

ROI Parameter Dw(Gy) Dm(Gy) Diff(%) p
PTV25 D98% 25.7 ± 0.9 24.9 ± 1.0 3.0 ± 1.2 0.002
D50% 27.2 ± 0.3 26.2 ± 0.4 3.5 ± 1.4 <  0.001
D2% 28.2 ± 0.4 27.0 ± 0.4 4.4 ± 1.9 <  0.001
PTV20 D98% 21.6 ± 0.9 21.1 ± 1.0 2.2 ± 0.7 0.019
D50% 25.2 ± 1.7 24.4 ± 1.7 2.8 ± 0.7 <  0.001
D2% 27.9 ± 0.4 26.8 ± 0.3 3.8 ± 1.7 <  0.001
Spinal D50% 14.4 ± 9.9 14.3 ± 9.9 0.4 ± 0.5 0.025
D2% 24.4 ± 1.4 24.3 ± 1.3 0.5 ± 0.3 0.001
Lungs D50% 1.4 ± 1.4 1.4 ± 1.4 0.0 ± 0.3 0.999
D2% 14.2 ± 5.7 14.3 ± 5.7 −0.6 ± 0.6 0.011
Esophagus D50% 5.1 ± 6.6 5.1 ± 6.6 −0.6 ± 1.0 0.950
D2% 21.0 ± 3.6 21.0 ± 3.6 0.1 ± 0.4 0.453