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目的探讨窗技术对慢性阻塞性肺气肿和无症状长期吸烟者肺残气量的评价。方法分别对50例临床确诊为慢性阻塞性肺气肿和50例长期吸烟者进行胸部螺旋CT扫描并与30例健康志愿者对比,取吸烟组CT值均值为窗位,方差的2倍数为窗宽设计图像。结果志愿者大部分以白影出现,第1组以不同程度黑影出现,第2组以不同程度磨玻璃影出现。结论本文设计的窗技术有助于临床对慢性阻塞性肺气肿和长期吸烟者肺残气量的评价。
Objective To investigate the evaluation of window technique for lung residual volume in chronic obstructive pulmonary emphysema and asymptomatic long-term smokers. Methods Fifty cases of clinically diagnosed chronic obstructive pulmonary emphysema and 50 cases of long-term smokers were analyzed by CT scan of thoracic spine and compared with 30 healthy volunteers. The mean value of CT value of smoking group was window position and the multiple of variance was window Wide design image. Results Most of the volunteers appeared in the white shadow, the first group appeared in different shades, the second group showed different degrees of ground glass. Conclusion The window technique designed in this paper is helpful for the clinical evaluation of pulmonary residual volume in chronic obstructive pulmonary emphysema and long-term smokers.