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Table 2 Summary of the median [IQR] Kappa, Dice and HD on the planning CTs and CBCTs

From: Oesophageal IGRT considerations for SBRT of LA-NSCLC: barium-enhanced CBCT and interfraction motion

 

Planning CTs (with Barium) (n = 17)

CBCTs without Barium (n = 46)

CBCTs with Barium (n = 44)

p-value*

CBCTs with Barium

25 mL (n = 14)

15 mL (n = 12)

10 mL (n = 10)

5 mL (n = 8)

p-value *

Kappa

0.851 [0.037]

0.607 [0.162]

0.772 [0.096]

< 0.001

0.732 [0.061]

0.766 [0.132]

0.814 [0.043]

0.775 [0.112]

0.008

Dice

0.916 [0.039]

0.791 [0.161]

0.879 [0.071]

< 0.001

0.859 [0.085]

0.866 [0.077]

0.895 [0.030]

0.883 [0.102]

< 0.001

HD (mm)

1.3 [0.5]

3.9 [2.6]

2.0 [1.0]

< 0.001

2.1 [1.1]

2.0 [1.3]

1.9 [0.7]

1.9 [1.2]

0.220

 

p-values for Dunn–Bonferroni pairwise comparisons*

Kappa

Dice

HD

 

25–15 mL

1.000

1.000

1.000

 

25–10 mL

0.006

< 0.001

1.000

 

25–5 mL

1.000

1.000

1.000

 

15–10 mL

0.051

< 0.001

1.000

 

15–5 mL

1.000

1.000

1.000

 

10–5 mL

0.249

0.036

1.000

  1. *P-values from the Mann–Whitney test (CBCTs—Barium vs. no Barium) and Kruskall–Wallis test (between Barium dose levels) with post hoc analysis