目的探析慢性阻塞性肺疾病的 CT及MRI影像学的鉴定价值。方法 选择 我院2013年4月-2014年12月期间收治71 例慢性阻塞性肺疾病患者作为观察组， 同期71例健康体检者为对照组。对两 组分别进行CT与MRI检查，比较两组CT 测量及肺功能指标及两种不同检查方法 COPPD分型结果。结果 观察组RV、TLC、 左肺、右肺及全肺E/L均高于对照组， FEV1、FEV1/VCMAX则低于对照组，比较 有统计学意义(P＜0.05)。CT检查共确诊 69例，敏感性达97.2%，明显高于MRI的 77.5%，比较有统计学意义(P＜0.05)。 结论 CT诊断COPD可更好显示患者肺部组 织与结构病变，利于早期却确诊且具有 较高敏感性，联合MRI可进一步明确患者 通气、灌注及呼吸动力学方面信息，可 为临床治疗提供有力参考。

Objective To explore the imaging identification value of CT and MRI in chronic obstructive pulmonary disease. Methods 71 patients with chronic obstructive pulmonary disease admitted into the hospital from April 2013 to December 2014 were selected as the observation group,and 71 cases of healthy physical examination as the control group.MRI and CT were respectively performed in two groups.CT measurement,pulmonary function indexes and results of COPPD type for two kinds of methods were compared between the two groups. Results The RV,TLC,left lung, right lung and whole-lung E/L in the observation group were higher than those in the control group,whileFEV1 and FEV1/VCMAX were lower than those in the control group and the comparison was statistically significant (P<0.05).There were 69 cases of confirmed diagnosis with CT examination and the sensitivity was 97.2% which was significantly higher than that of MRI and the comparison was statistically significant (P<0.05). Conclusion CT for diagnosis of COPD can better display pathological changes of lung tissue and structure in patients,which is conducive to the early diagnosis with higher sensitivity.Combined with MRI,it can be used to identify patients with ventilation,perfusion and respiratory mechanics information,which can provide a powerful reference for clinical treatment.