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. 2021 Oct 22;13(11):1768. doi: 10.3390/pharmaceutics13111768

Table 3.

Radiological Severity Index.

Degree of Severity Definition
1 One lobe less than 25% of lobe area
2 One lobe more than 25% of lobe area
3 Unilateral and less than one lobe less than 25% of each lobe area
4 Unilateral and more than one lobe less than 25% of each lobe area
5 Bilateral patch lesions on all lobes
6 Bilateral, all of one but not all lobes
7 Bilateral, all lobes, diffuse but less than 25% of each lobe area
8 Bilateral, all lobes, diffuse and 25–50% of each lobe area
9 Bilateral, all lobes, diffuse and 50–75% of each lobe area
10 Bilateral, all lobes, diffuse and more than 75% of each lobe area