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CT severity and perfusion deficit severity scores
| CT severity score | Extent of lesions for each lung lobe |
|---|---|
| 0 | 0% |
| 1 | <5% |
| 2 | 5–25% |
| 3 | 26–50% |
| 4 | 51–75% |
| 5 | >75% |
| Perfusion deficit severity score | Extent of perfusion deficits for each lung lobe |
| 0 | 0% |
| 1 | <5% |
| 2 | 5–25% |
| 3 | 26–50% |
| 4 | 51–75% |
| 5 | >75% |
CT, Computed tomography.
Scores were defined for each lobe and the sum of the scores of the lobes constitutes the total lung score.
Total score scale: 0–25.
