摘要目的评估慢性阻塞性肺疾病(COPD)病人发生支气管扩张对气道疾病的气道指标的影响,并确定所需测量段和亚段支气管的最少数量。材料与方法本研究经当地伦理委员会批准,并取得所有受试者的书面同意。本前瞻性研究对20例COPD病人在服用支气管扩张药前后均进行肺功能检查及CT检查。8名健康志愿者进行2次CT检查。由3位阅片者对3、4级支气管的管腔面积和管壁厚度(WT)进行2 Abstract Objective To evaluate the effect of bronchiectasis on airway parameters in patients with chronic obstructive pulmonary disease (COPD) and to determine the minimum number of bronchial tubes required for the measurement and sub-segment. Materials and Methods The study was approved by the local ethics committee and obtained the written consent of all subjects. This prospective study of 20 patients with COPD patients taking bronchodilator before and after pulmonary function tests and CT examination. Eight healthy volunteers performed two CT examinations. The luminal area and wall thickness (WT) of grade 3 and grade 4 bronchi were evaluated by 3 readers