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Table 5 Dose-volumetric evaluation and comparison of plans for the rectum during the treatment course

From: Retrospective study comparing MR-guided radiation therapy (MRgRT) setup strategies for prostate treatment: repositioning vs. replanning

Indices

Plan

Mean ± SD (%)

p-value

% of reproducible plana

Average difference (%)

D15%

Soft

62.3 ± 2.8

0.009*

87.4

1.1 ± 6.4

 

Adaptive

61.3 ± 1.5

 

89.5

−0.8 ± 3.0

D25%

Soft

57.5 ± 3.2

0.16

87.4

1.1 ± 7.7

 

Adaptive

56.5 ± 1.8

 

86.3

−1.0 ± 3.7

D35%

Soft

75.7 ± 5.1

0.033*

87.4

1.2 ± 8.8

 

Adaptive

74.4 ± 2.7

 

81.1

−1.0 ± 4.4

D50%

Soft

66.5 ± 5.6

0.059

86.3

1.2 ± 9.9

 

Adaptive

65.2 ± 2.9

 

76.8

−1.1 ± 5.8

  1. *Statistically significant comparisons; a Percentage of plans with a difference of < 5% compared to the initial plan