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Table 2 Summary of results for twenty-two prostate plans, showing average relative % differences between SC and MC calculated dose-volume indices including standard deviation and the range of dose-volume indices.

From: Monte Carlo dose verification of prostate patients treated with simultaneous integrated boost intensity modulated radiation therapy

Structure

Dose-volume index

Range of Indices (%)

Average relative % difference

PTV prostate

D98

[-3.8, 0.06]

1.2 ± 1.1 (p < 0.05)

 

D50

[-3.2, 0.9]

0.8 ± 1.0 (p < 0.05)

 

D2

[-0.5, 4.2]

1.4 ± 1.4 (p < 0.05)

 

Dmean

[-2.5, 2.9]

0.3 ± 1.1 (p > 0.05)

PTV nodes

D95

[-4.7, 0.6]

1.5 ± 1.4 (p < 0.05)

 

D50

[-3.0, 1.0]

0.4 ± 1.3 (p > 0.05)

 

D2

[-2.1, 2.6]

0.1 ± 1.1 (p > 0.05)

 

Dmean

[-2.9, 1.4]

0.3 ± 1.2 (p > 0.05)

Rectum

D50

[-3.6, 3.4]

0.2 ± 1.8 (p > 0.05)

 

D10

[-2.9, 2.2]

0.3 ± 1.5 (p > 0.05)

 

D2

[-2.5, 1.9]

0.4 ± 1.2 (p > 0.05)

 

Dmean

[-2.9, 3.1]

0.6 ± 1.7 (p > 0.05)

Bladder

D50

[-3.7, 1.4]

0.9 ± 1.4 (p < 0.05)

 

D10

[-3.2, 1.5]

0.7 ± 1.3 (p < 0.05)

 

D2

[-2.7, 2.2]

0.7 ± 1.1 (p < 0.05)

 

Dmean

[-3.8, 0.9]

0.8 ± 1.3 (p < 0.05)

Small Bowel

D50

[0.2, 115]

30.2 ± 40.7 (p < 0.05)

 

D10

[-3.1, 120.7]

10.1 ± 26.4 (p < 0.05)

 

D2

[-2.6, 100.1]

6.8 ± 21.5 (p < 0.05)

 

Dmean

[-1.5, 123.5]

16.5 ± 27.5 (p < 0.05)

Femurs

D50

[1.2, 14.5]

8.6 ± 3.6 (p < 0.05)

 

D10

[-3.0, 8.4]

4.6 ± 3.5 (p < 0.05)

 

D2

[-2.9, 8.6]

4.1 ± 3.3 (p < 0.05)

 

Dmean

[-0.9, 10.3]

6.3 ± 3.9 (p < 0.05)

Skin 1 cm Ant

D2

[1.7, 12.1]

7.7 ± 3.8 (p < 0.05)

  1. The p values determine if the mean of relative differences are significantly different from zero.