肺密度差与肺功能的相关性研究

STUDY OF RELATION BETWEEN PULMONARY DENSITY DIFFERENCES AND VENTILATORY FUNCTION OF THE LUNG

对１４０例中老年人肺密度差与肺功能的相关性进行了研究，其中慢性支气管炎肺气肿病人９０例，正常中老年人５０例。结果表明：肺密度差与肺通气功能显著相关。以肺密度差为标准对肺气肿进行诊断及分级诊断，其敏感性以及与肺功能诊断的符合率均高于常规胸片诊断。本研究提示肺密度差测量有可能成为诊断肺气肿的较好方法。

This paper reports the results of a study of the relationship between the pulmonary density differences(PDD)and the ventilatory function of the lung(VFL)in 50 middleaged and old-aged normal persons and 90 patients with chronic bronchitis and emphysema.The results showed that there existed a remarkably close relationship between the PDD and VFL,It was also found that the sensitivity of PDD to emphysema was much higher than that of the conventional film,and the diagnostio coincidence with PDD as creteria was also higher.These facts indicate that the determination of PDD may be a more efficient and exact method for diagnosing emphysema.