Table 1.
CT findings of influenza H1N1 virus-associated pneumonia.
| CT findings | Number of patients | κ | |
|---|---|---|---|
| Ground-glass opacities | 24/24 (100) | N.A. | |
| Airspace consolidation | 23/24 (96) | 0.36 | |
| Intralobular reticular opacities | 1/24 (4) | 0.16 | |
| Emphysema | 1/24 (4) | 0.36 | |
| Bronchial dilatation | 2/24 (8) | −0.14 | |
| Bronchial wall thickening | 7/24 (29) | 0.48 | |
| Lower volume loss | 10/24 (42) | 0.41 | |
| Subpleural sparing | 8/24 (33) | 0.00 | |
| Centrilobular nodules | 11/24 (46) | 0.66 | |
| Tree-in-bud appearance | 7/24 (29) | 0.65 | |
| Lymphadenopathy | 12/24 (50) | 0.25 | |
| Pleural effusion | 7/24 (29) | 0.73 | |
| Predominant overall anatomic distribution | |||
| Peripheral | 7/24 (29) | 0.63 | |
| Peribronchovascular | 20/24 (83) | 0.21 | |
| Bilateral | 17/24 (71) | 0.36 | |
| Unilateral | 7/24 (29) | 0.36 | |
| Lower | 15/24 (63) | 0.50 | |
| Upper and middle | 4/24 (17) | 0.25 | |
| Diffuse or random | 5/24 (21) | 0.19 | |
| CT pattern | |||
| Classical (type A) | 11/24 (46) | 0.75 | |
| Non-classical (type B) | 4/24 (17) | 13/24 (54) | 0.75 |
| Non-classical (type C) | 9/24 (38) | ||