Ultra-low dose computed tomography chest vs chest radiography in paediatric primary ciliary dyskinesia: A prospective study

Table 1 Inter-rater reliability of Brody II score

Brody II criteria	Inter-rater reliability
Bronchiectasis	0.34 (-0.46–0.87)
Peribronchial thickening	0.34 (-0.33–0.92)
Mucus plugging	0.8 (0.52–0.99)
Parenchymal opacity	0.79 (0.67–0.91)
Air trapping	Not assessed

Inter-rater reliability calculated using the Krippendorff alpha with bootstrapping to account for clustering. 95%CIs in parentheses.

Table 2 Subjective image quality

Mean subjective image quality score	Image noise lung windows	Image noise soft tissue windows	Central bronchovascular structure depiction	Peripheral (within 2 cm of parietal pleura) bronchovascular structure depiction	Streak artifact	Overall diagnostic acceptability on lung windows	Overall diagnostic acceptability on soft tissue windows
Overall	4.1 ± 0.49	3.2 ± 0.06	3.9 ± 0.91	3.5 ± 1.12	3.3 ± 0.15	3.9 ± 1.07	3.3 ± 0.11
2-patient subgroup	3.5 ± 0.71	2.8 ± 0.05	3.9 ± 0.14	3.7 ± 0.21	3.4 ± 0.77	3.8 ± 0.28	3.0 ± 0.29