CT scoring systems | Bhalla [22] | Nathanson [23] | Maffessanti [25] | Shah [27] | Santamaria [28] | Helbich [30] | Robinson [32] | Brody II [34] |
---|---|---|---|---|---|---|---|---|
(1991) | (1991) | (1996) | (1997) | (1998) | (1999) | (2001) | (2004) | |
Scoring area | BPS | 12 zones | 4 regions | 6 zones + BPS | BPS | BPS | 6 lobes | 6 lobes |
(modified Bhalla) | (modified Bhalla) | (modified Bhalla) | (modified Bhalla) | (modified Brody I) | ||||
Scoring components/scoring levels, scoring range | ||||||||
Increased lung volume | Emphysema 0–2Range 0−2 | Overinflation 0–1Range 0−1 | Air trapping 0–2 (expiratory scans if regional reduced density) Range 0−2 | Emphysema 0–2 Range 0−2 | Air trapping on expiratory image 0–4 Range 0−4 | Air trapping on expiratory image: Extent 0–3 × appearance 1–1.5Range: 0–4.5 | ||
Bronchial wall thickening | 0−3 Range 0−3 | 0−2 Range 0−2 | 0−3 Range 0−3 | 0−3 Range 0−3 | 0−3 Range 0−3 | 0−4 Range 0−4 | (Extent central 0–3 + peripheral lung 0–3) × severity 1–1.5 Range 0−9 | |
Bronchiectasis | Severity 0–3 Extent 0–3 Sacculations or abscesses 0–3 Generations bronchial divisions involved 0–3 × 0.5 Range 0–10.5 | 0−5 Range 0−5 | Diameter 0–3 Axial extent 0–3 Range 0−6 | Severity 0–3 Extent 0–3 Air-fluid levels 0–3 Range 0−9 | Severity 0–3 Extent 0–3 Generations bronchial divisions involved 0–3 × 0.5 Range 0–7.5 | Severity 0–3 Extent 0–3 Sacculations or abscesses 0–3 Generations bronchial divisions involved 0–3 × 0.5 Range 0–10.5 | 0−4 Range 0−4 | (Extent central 0–3 + peripheral lung 0–3) × average bronchiectasis size 0–2 Range 0−12 |
Mucus plugging | Extent: 0–3 Generations bronchial divisions involved 0–3 × 0.5 Range 0–4.5 | 0-1 Range 0-1 | Recorded separately | Extent: 0–3 Centrilobular nodules, 0–6 Range 0−9 | Extent: 0–3 Generations bronchial divisions involved 0–3 × 0.5 Range 0–4.5 | Extent: 0–3 Generations bronchial divisions involved 0–3 × 0.5 Range 0–4.5 | 0-4 Range 0−4 | Extent central lung 0–3 + peripheral lung 0–3 Range 0−6 |
Parenchyma | Collapse or consolidation 0–2 No. of bullae 0–3Range 0−5 | Alveolar consolidations 0–1 Atelectasis, bullae and cysts 0–1 Range 0−2 | Atelectasis or consolidation 0–3 Range 0−3 | Collapse 0–2 No. of bullae 0–3 Acinar nodules/ consolidations 0–2 Thickened intra or inter lobular septa 0–3 Ground glass opacities 0–3 Range 0−13 | Collapse or consolidation 0–2 No. of bullae 0–3 Mosaic perfusion 0–2 Range 0−7 | Atelectasis or consolidation 0–4Range 0−4 | Extent of dense opacity, ground glass opacity, and cysts or bullae. Each 0–3 Range 0−9 | |
Total score | Maximum 25 | Per zone max. 6 p (demerit points) Score = 72-max. 72 =Minimum 0 | % of regional involvement (thirds of lung on axial slices). Each region × 0–3 Maximum 132 | Maximum 24 | Maximum 30 | Maximum 27 | Per lobe max. 20 Maximum 120 | Per lobe max. 40.5, but max. possible score is 207. Score then normalised 0–100 Maximum 100 |