Thin-section CT images of the lung from a patient with idiopathic pulmonary fibrosis can be graded based using a scoring system. The score can be monitored over time and may correlate with the patient's prognosis.
Parameters:
(1) alveolar score
(2) interstitial score
|
Parameter |
Finding |
Points |
|
alveolar score |
no alveolar disease, normal |
0 |
|
|
ground glass opacity involving < 5% of the lobe (minimal disease, but not normal) |
1 |
|
|
ground glass opacity involving 5 - 24% of the lobe |
2 |
|
|
ground glass opacity involving 25 - 49% of the lobe |
3 |
|
|
ground glass opacity involving 50 - 75% of the lobe |
4 |
|
|
ground glass opacity involving > 75% of the lobe |
5 |
|
interstitial score |
no interstitial disease |
0 |
|
|
interlobular septal thickening no discrete honeycombing |
1 |
|
|
honeycombing and/or septal thickening involving < 25% of the lung |
2 |
|
|
honeycombing and/or septal thickening involving 25 - 49% of the lung |
3 |
|
|
honeycombing and/or septal thickening involving 50 to 75% of the lung |
4 |
|
|
honeycombing and/or septal thickening involving > 75% of the lung |
5 |
total score =
= (points for alveolar score) + (points for interstitial score)
Interpretation:
• minimum total score: 0
• maximum total score: 10
• The higher the score, the more severe the disease.
Specialty: Pulmonology
ICD-10: ,
