本文就近年来小气道的HRCT解剖、HRCT技术以及在小气道疾病状态下的病理变化与相应的HRCT表现作一综述，重点阐述HRCT在其诊断中的应用价值。

The author reviews the HRCT anatomys, techiques and pathologys of the small airways in the recent years, and elaborates the important value of HRCT in the diagnosis.

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肺气肿——是小气道、还是肺实质的疾病呢？

Emphysema - a Disease of Small Airways or Lung Parenchyma?

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