| CT signs | First CTa | Second CTb | Third CTc |
| Number of lesions | 64 | 89 | 77 |
| Focus distribution | |||
| One lung involvement, n (%) | 6 (40) | 1 (6.7) | 1 (6.7) |
| Bilateral lung involvement, n (%) | 9 (60) | 14 (93.3) | 14 (93.3) |
| Single focus, n (%) | 5 (33.3) | 1 (6.7) | 1 (6.7) |
| Two or more multiple lesions, No. (%) | 10 (66.7) | 14 (93.3) | 14 (93.3) |
| The dominant distribution area of focus | |||
| Anterior, n (%) | 8 (12.5) | 25 (28.1) | 18 (23.3) |
| Posterior, n (%) | 56 (87.5) | 64 (71.9) | 59 (76.6) |
| Peripheral, n (%) | 58 (90.6) | 75 (84.3) | 66 (85.7) |
| Central, n (%) | 6 (9.4) | 14 (15.7) | 11 (14.3) |
| Affected lung field | |||
| Upper lung (two upper lobes + right middle lobe), n (%) | 27 (42.2) | 43 (48.3) | 36 (46.8) |
| Lower lung, n (%) | 37 (57.8) | 46 (51.7) | 41 (53.2) |
| Pneumonia focus as a percentage of total lung volume (%, [M(Q)]) | 1.69(4.59) | 3.47 (5.46) | 2.23 (4.75) |
| The total score of lung disease severity | 36 | 63 | 57 |