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