摘要
目的采用多排螺旋CT肺功能技术研究吸烟与非吸烟者的肺功能状态。方法 84名40～60岁无症状受试者(吸烟和非吸烟者)行CT检查,分别于最大吸气末、最大呼气末扫描全肺,用Pulmo肺定量软件对选定三个平面分别测定-950～-900 Hu与-1 000～-950 Hu的肺像素指数-900像数指数和平均肺密度,对吸烟组和非吸烟组进行对照研究。结果吸烟组与非吸烟组在主动脉弓层面,呼气相PI_(-900)和平均肺密度有统计学意义(P<0.05)。结论吸烟者较非吸烟者更易引起上肺的肺气肿,呼气相CT肺功能检查可较准确地发现和显示肺的功能状态。
Objective To evaluate the pulmonary function of smokers and non-smokers by multidetector spiral CT technology. Methods 84 asymptomatic subjects aged 40-60 （smokers and non-smokers） was scanned by multi-detector spiral CT. Whole chest were scanned at the end of the largest inhalation and exhalation respectively. The lung pixel index and mean lung density （MLD） were measured by quantitative lung Pulmo software in three selected plane of lung. The comparative study between smoking group and non-smoking group was made. Results The exhalation-phase of pixel index of -900 Hu and MLD were statistically significant （P 〈0.05） between smoking group and non-smoking group in the aortic arch level. Conclusion Smokers are more likely to develop up-lung emphysema compared to non-smokers in the early stage. Exhalation-phase computed tomography-pulmmary function test can find emphysema more accurately and display the status of pulmonary function.
出处
《兰州大学学报（医学版）》
CAS
2010年第3期74-76,80,共4页
Journal of Lanzhou University（Medical Sciences）
关键词
多排螺旋CT
肺功能
肺密度
multi-detector spiral computed tomography
pulmonary function
lung density
