Gaeta Michele, Minutoli Fabio, Girbino Giuseppe, Murabito Alessandra, Benedetto Caterina, Contiguglia Rosario, Ruggeri Paolo, Privitera Salvatore
Department of Biomedical Sciences and of Morphological and Functional Images, University of Messina, Messina, Italy.
Multidiscip Respir Med. 2013 Jul 9;8(1):44. doi: 10.1186/2049-6958-8-44.
Expiratory CT scan is usually obtained as supplement to normal inspiratory CT scan to recognize air-trapping, which is expression of small airways obstruction. In some patients the air-trapping may be the only sign of an early-stage small airways disease in an otherwise normal lung.The purpose of this article is to illustrate pathologic conditions, namely obliterative bronchiolitis, in which expiratory CT scan can be abnormal despite normal inspiratory CT examination, and to highlight indications for this technique in patients with clinical and functional suspect of bronchiolar obstruction.
呼气期CT扫描通常作为常规吸气期CT扫描的补充，用于识别气体陷闭，这是小气道阻塞的表现。在一些患者中，气体陷闭可能是原本正常的肺中早期小气道疾病的唯一征象。本文旨在阐述一些病理情况，即闭塞性细支气管炎，在这些病例中，尽管吸气期CT检查正常，但呼气期CT扫描仍可能出现异常，并强调该技术在临床上怀疑有细支气管阻塞且有功能异常的患者中的应用指征。
