Table 1

Diagnostic imaging findings in bronchiectasis

Imaging findings in bronchiectasis
 Bronchial dilatation: objectively assessed by broncho–arterial ratio >1:1 (or >1.5:1 for increased specificity)
 Lack of bronchial tapering >2 cm in length from airway bifurcation
 Visible peripheral airways within 1 cm vicinity of costal pleura or directly abutting mediastinal pleura
Common associated findings suggestive of airway disease or inflammation
 Bronchial wall thickening
 Mucus plugging
 Tree-in-bud opacities