2Gevenois PA, De Vuyst P, Sy M, et al. Detection of emphysema progression in alpha 1-antitrypsin deficiency using CT densitome- try; Methodological advances[J]. Respir Res, 2008, 9 : 21.
4Dirksen A. Is CT a new research tool for COPD [ J ] ? Clin Respir J, 2008, 2 Suppl 1 : 76 - 83.
5Roberts HR, Wells AU, Milne DG, et al. Airflow obstruction in bronchieetasis: eorrelation between computed tomography features and pulmonary function tests[J]. Thorax, 2000, 55:198 -204.
6Kosacka M, Brzecka A, Jankowska R, et al. Combined pulmona- ry fibrosis and emphysema-case report mad literature review [ J ]. Pneumonol Alergol Pol, 2009, 77:205 - 210.
8Barbosa EM Jr, Song G, Tustison N, et al. Computational analy- sis of thoracic multidetector row HRCT for segmentation and quan- tification of small airway air trapping and emphysema in obstructive pulmonary disease[ J]. Acad RadioI, 2011, 18 : 1258 - 1269.
9Orlandi I, Moroni C, Camiciottoli G, et al. Chronic obstructive pulmonary disease: thin-section CT measurement of airway wall thickness and lung attenuation[J]. Radiology, 2005,234: 604- 610.
10Bafadhel M, Umar I, Gupta S, et al. The role of CT scanning in multidimensional phenotyping of COPD [ J 1. Chest, 2011, 140 : 634 - 642.
4Best AC, Lynch AM, Boric CM, et al. Quantitative CT indexes in idiopathic pulmonary fibrosis: relationship with physiologic impairment. Radiology,2003,228:407-414.
5Kauezor HU, Heussel CP, Fischer B, et al. Assessment of lung volumes using helical CT at inspiration and expiration: comparison with pulmonary function tests. AJR Am J Roentgenol, 1998,171 : 1091-1095.
6Stolk J, Dirksen A, van der Lugt AA, et al. Repeatability of lung density measurements with low-dose computed tomography in subjects with alpha-1 -antitrypsin deficiency-associated emphysema. Invest Radiol, 2001,36:648-651.
7Gevenois PA,De Vuyst P, de Maertelaer V, et al. Comparison of computed density and microscopic morphometry in pulmonary emphysema. Am J Respir Crit Care Med,1996,154:187-192.
8Miller P.R, Mailer NL, Vedal S, et al. Limitations of computed tomography in the assessment of emphysema. Am Rev Respir Dis, 1989,139 : 980-983.
9Nakano Y, Sakai H, Muro S, et al. Comparison of low attenuation areas on computed tomographic scans between inner and outer segments of the lung in patients with chronic obstructive pulmonary disease: incidence and contribution to lung function. Thorax, 1999,54:384-389.
10Kitaguch Y, Fujimoto K, Kubo K, et al. Characteristics of COPD phenotypes classified according to the findings of HRCT. Respir Med, 2006, 100: 1742-1752.
7WELLS J M, WASHKO G R, HAN M K, et al. Pulmonary arterial enlargement and acute exacerbations of COPD[J]. N Engl J Med, 2012, 367(10): 913-921.
8IYER A S, WELLS J M, VISHIN S, et al. CT scan-measured pulmonary artery to aorta ratio and echocardiography for detecting pulmonary hypertension in severeCOPD[J]. Chest, 2014, 145(4): 824-832.
9CHEVALIER-BIDAUD B, GILLET-JUVIN K, CALLENS E, et al. Non specific pattern of lung function in a respiratory physiology unit: causes and prevalence: results of an observational cross-sectional and longitudinal study[J/ OL]. BMC Pulm Med, 2014, 14: 148[2014-09-19]. http://www, biomedcentral, com/1471-2466/14/148/.
10SAKAO S, VOELKEL N F, TATSUMI K. The vascular bed in COPD: pulmonary hypertension and pulmonary vascular alterations[J]. Eur Respir Rev, 2014, 23 (133) : 350-355.