目的：评价呼气相电子计算机体层扫描(CT)在诊断慢性气道疾病方面的应用价值。
Objective: to evaluate the clinical significance of expiratory ct scans in chronic airway diseases.
COPD与哮喘均属于慢性气道炎症性疾病。
COPD and asthma are chronic inflammatory diseases of the airways.
慢性阻塞性肺疾病(COPD)是一种慢性进行性气道和肺组织破坏性疾病。
Chronic Obstructive pulmonary Disease (COPD) is a slowly progressive airway and pulmonary destructive inflammation, including chronic bronchitis and emphysema.
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