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KMID : 1141720150030020003
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폐쇄성폐질환
2015 Volume.3 No. 2 p.3 ~ p.3
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Kim Eun-Young
Lee Sang-Min
Seo Joon-Beom
Jin Gong-Yong
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Abstract
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Chronic obstructive pulmonary disease (COPD) is a heterogenous disease consisting of various combinations of emphysema, small airways disease and chronic bronchitis. Identification of COPD phenotypes together with the relative contributions of these elements can improve detection rate of treatable subtypes and the outcome of COPD patients. For the quantification of emphysema, the densitometry using fixed density threshold has been known to be highly reproducible. But, there are many sources of variation and correction for lung volume should be considered. Air trapping has been known to be an indicator of small airway obstruction. Therefore, air trapping can be used indirectly to quantify small airways disease. Airway dimensions can be objectively measured using CT at the segmental and subsemental level. It is well known that measurements of airway parameters correlate well with the severity of airflow obstruction. This article reviews quantitative method using chest CT in the diagnosis of COPD.
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KEYWORD
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Pulmonary disease, Chronic obstructive, Pulmonary emphysema, Airway obstruction, Tomography, X-ray computed
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FullTexts / Linksout information
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Listed journal information
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