Score | Evaluation criteria |
0 point | No emphysematous lesions |
1 point | Occupying less than 25% of the entire lung field |
2 point | Occupying from 25 to less than 50% of the entire lung field |
3 point | Occupying from 50 to less than 75% of the entire lung field |
4 point | Occupying more than 75% of the entire lung field |