Table 2 Modified Helbich scoring system for HRCT and MRI
Score | ||||
|---|---|---|---|---|
Category | 0 | 1 | 2 | 3 |
Severity of bronchiectasis | Absent | Mild (lumen slightly greater than diameter of adjacent blood vessel) | Moderate (lumen 2 to 3 times the diameter of the vessel) | Severe (lumen > 3 times the diameter of the vessel) |
Severity of peribronchial wall thickening | Absent | Mild (wall thickness equal to diameter of adjacent vessel) | Moderate (wall thickness greater than and up to twice the diameter of adjacent vessel) | Severe (wall thickness more than twice the diameter of adjacent vessel) |
Extent of bronchiectasis | Absent | 1–5# | 6–9# | > 9# |
Extent of mucous plugging | Absent | 1–5# | 6–9# | > 9# |
Extent of sacculations or abscesses | Absent | 1–5# | 6–9# | > 9# |
Generation of bronchial divisions involved (bronchiectasis or plugging) | Absent | Up to the 4th generation | Up to the 5th generation | Up to the 6th generation and distal |
Severity of bullae | Absent | Unilateral (not > 4) | Bilateral (not > 4) | > 4 |
Severity of emphysema | Absent | 1–5# | > 5# | Not applicable |
Severity of collapse or consolidation | Absent | Subsegmental | Segmental or lobar | Not applicable |