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 |