采用HRCT、CT肺功能成像及PFT在COPD疾病诊断中价值对比

HRCT,CT Pulmonary Function Imaging,and Its Value of PFT in the Diagnosis of COPD Disease

目的对比分析HRCT、CT肺功能成像及PFT用于诊断COPD疾病中的价值。方法选取本院2017年6月至2019年5月在我院确诊为COPD疾病的患者56例作为研究对象,患者均进行了RCT、CT肺功能成像及PFT检查。以PFT为参考,观察HRCT评估肺气肿分级、CT肺功能成像的阻塞性通气功能障碍分级情况。结果PFT检查检查结果显示肺气肿1级、2级、3级例数分别为5、9、8例,阻塞性通气障碍0级21例,1级10例,2级13例,3级6例,HRCT评估肺气肿1级、2级、3级例数分别为12、2、9例,HRCT与PFT的肺气肿分级间比较差异有统计学意义(P<0.05)。CT肺功能成像评估阻塞性通气障碍与PFT比较无差异(P>0.05)。COPD在中肺气肿常表现为异常的低衰减区周围围绕正常衰减的肺实质,累及到小叶中心性肺气肿时,肺小叶中心的点状或者线的密度增高影。结论HRCT诊断肺部病变有着较高的敏感性,但在评估肺气肿分级中有局限性,CT肺功能成像技术评估局部或整体的肺部功能阻塞性通气障碍评估有着较高的价值。

Objective To compare and analyze the HRCT,CT pulmonary function imaging and its value of PFT in the diagnosis of COPD disease.Methods 56 patients with COPD diagnosed in our hospital from June 2017 to May 2019 were enrolled in the study.All patients underwent RCT,CT pulmonary function imaging,and PFT.PFT was used as a reference to observe the emphysema grading by HRCT and obstructive ventilation function disturbance grading of CT pulmonary function imaging.Results The results of the PFT examination showed that the number of emphysema grades 1,2,and 3 was 5,9,and 8 cases,and the number of obstructive ventilation function disturbance grades 0,1,2,and 3 were 21,10,13 and 6 cases.The number of emphysema grades 1,2,and 3 evaluated by HRCT was 12 cases,2 cases,and 9 cases.There was a significant difference in emphysema grading between HRCT and PFT(P<0.05).There was no difference in obstructive ventilation function disturbance evaluated by CT pulmonary function imaging and PFT(P>0.05).COPD in the middle emphysema often shows lung parenchyma of abnormally low attenuation surrounded by the normal attenuation.When involving the centrilobular emphysema dot-like or line density-increased shadow appeared in the center of the lobules.Conclusion HRCT has a higher sensitivity for diagnosing pulmonary lesions but has limitations in assessing emphysema grading.CT pulmonary function imaging techniques have a higher value in assessing local or overall obstructive ventilation function disturbance.