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Fig. 1 | BMC Pulmonary Medicine

Fig. 1

From: Diagnostic efficacy of visual subtypes and low attenuation area based on HRCT in the diagnosis of COPD

Fig. 1

HRCT manifestations of seven different visual subtypes. a Normal. b Paraseptal emphysema. c Bronchitis; HRCT shows thickening of the bronchial wall without obvious emphysema area. d Centrilobular emphysema (mild); LAA accounts for less than 0.5%. e Centrilobular emphysema(moderate); LAA accounts for 0.5–5%. f Centrilobular emphysema (severe); LAA accounts for more than 5%. g Advanced destructive emphysema; Panlobular emphysema with bronchus hyperexpansion and distortion

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