PMID: 9556291Apr 29, 1998Paper

Assessment of air trapping using postexpiratory high-resolution computed tomography

Journal of Thoracic Imaging
D ChenK N Lee

Abstract

The authors assess the utility of postexpiratory high-resolution computed tomography (HRCT) scans in the evaluation of air trapping in patients with obstructive lung disease. Thirteen healthy volunteers and 14 patients with obstructive lung disease (OLD) were examined using inspiratory and postexpiratory HRCT scans. All had pulmonary function tests. Lung attenuation was measured on both inspiration and expiration, and the extent of air trapping on postexpiratory scans was visually assessed. The results of the healthy volunteers were compared with those of patients with OLD, and HRCT findings were correlated with pulmonary function tests. Lung attenuation on expiration, its change from inspiration to expiration, and air-trapping scores of patients with OLD were significantly different from those of the healthy volunteers. When the healthy participants and patients with OLD were combined and analyzed as one group, the lung attenuation change and air-trapping score both significantly correlated with pulmonary function tests (p < 0.001) and correlation values were similar (r = 0.61-0.89). Air trapping was found in 61% of healthy participants and all the patients with OLD, although the extent was significantly greater in the patient...Continue Reading

Citations

Dec 20, 2005·European Radiology·P U Dalal, D M Hansell
Oct 19, 2004·European Journal of Radiology·Christian LohrmannMathias Langer
Oct 29, 2005·American Journal of Respiratory and Critical Care Medicine·Mostafa GhaneiJafar Aslani
Apr 23, 2010·AJR. American Journal of Roentgenology·Edward Y LeePhillip M Boiselle
Dec 20, 2003·AJR. American Journal of Roentgenology·J ZhangP M Boiselle
Aug 20, 2010·Radiology·David M Hansell
Jun 24, 2014·Annals of the American Thoracic Society·Wallace T MillerMichael G Hewitt
Oct 8, 2015·European Journal of Radiology·Thitiporn SuwatanapongchedSumalee Kiatboonsri
Oct 1, 2008·The Clinical Respiratory Journal·A Dirksen
Sep 29, 2009·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·James H HolmesSean B Fain
Mar 2, 2005·Radiologic Clinics of North America·Frederick R Long
May 31, 2015·Clinics in Chest Medicine·Rachael M EdwardsSudhakar N J Pipavath
Mar 30, 2021·Radiology. Cardiothoracic Imaging·Danielle ByrneAna-Maria Bilawich

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