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Emphysema in asymptomatic smokers: quantitative CT evaluation in correlation with pulmonary function tests. 2013

K Yasunaga, and N Chérot-Kornobis, and J-L Edmé, and A Sobaszek, and C Boulenguez, and A Duhamel, and J-B Faivre, and J Remy, and M Remy-Jardin
Department of Thoracic Imaging, Hospital Calmette, EA 2694, boulevard Jules-Leclercq, 59037 Lille cedex, France.

OBJECTIVE To provide quantitative information on emphysema in asymptomatic smokers in correlation with pulmonary function tests (PFT). METHODS The study population included 75 smokers (current smokers: n=39; ex-smokers: n=36) and 25 nonsmokers who underwent volumetric high-resolution CT of the chest with automated quantification of emphysema and PFTs. RESULTS Current smokers had a higher percentage of emphysema in the right lung (P=0.041) and right upper lobe (P=0.037). The overall percentage of emphysema did not differ according to the Gold stage (P=0.77). Smokers with emphysema had significantly higher mean values of FRC (P=0.012), RV (<0.0001) and TLC (P=0.0157) than smokers without emphysema but no significant differences were found in neither the mean values of TLCO nor in expiratory flows (P>0.05). Correlations were found between the percentage of emphysema and (a) cigarette consumption of current (r=0.34215; P=0.0330) and ex-smokers (r=0.44104; P=0.0071); and (b) alterations of TLC, FRC, RV and DLCO of smokers. CONCLUSIONS Quantitative CT allows recognition of regional specificities and subclinical functional alterations in smokers with emphysema.

UI MeSH Term Description Entries
D007089 Image Enhancement Improvement of the quality of a picture by various techniques, including computer processing, digital filtering, echocardiographic techniques, light and ultrastructural MICROSCOPY, fluorescence spectrometry and microscopy, scintigraphy, and in vitro image processing at the molecular level. Image Quality Enhancement,Enhancement, Image,Enhancement, Image Quality,Enhancements, Image,Enhancements, Image Quality,Image Enhancements,Image Quality Enhancements,Quality Enhancement, Image,Quality Enhancements, Image
D007090 Image Interpretation, Computer-Assisted Methods developed to aid in the interpretation of ultrasound, radiographic images, etc., for diagnosis of disease. Image Interpretation, Computer Assisted,Computer-Assisted Image Interpretation,Computer-Assisted Image Interpretations,Image Interpretations, Computer-Assisted,Interpretation, Computer-Assisted Image,Interpretations, Computer-Assisted Image
D008176 Lung Volume Measurements Measurement of the amount of air that the lungs may contain at various points in the respiratory cycle. Lung Capacities,Lung Volumes,Capacity, Lung,Lung Capacity,Lung Volume,Lung Volume Measurement,Measurement, Lung Volume,Volume, Lung
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011653 Pulmonary Diffusing Capacity The amount of a gas taken up, by the pulmonary capillary blood from the alveolar gas, per minute per unit of average pressure of the gradient of the gas across the BLOOD-AIR BARRIER. Capacity, Pulmonary Diffusing,Diffusing Capacity, Pulmonary
D011656 Pulmonary Emphysema Enlargement of air spaces distal to the TERMINAL BRONCHIOLES where gas-exchange normally takes place. This is usually due to destruction of the alveolar wall. Pulmonary emphysema can be classified by the location and distribution of the lesions. Emphysema, Pulmonary,Centriacinar Emphysema,Centrilobular Emphysema,Emphysemas, Pulmonary,Focal Emphysema,Panacinar Emphysema,Panlobular Emphysema,Pulmonary Emphysemas,Centriacinar Emphysemas,Centrilobular Emphysemas,Emphysema, Centriacinar,Emphysema, Centrilobular,Emphysema, Focal,Emphysema, Panacinar,Emphysema, Panlobular,Emphysemas, Centriacinar,Emphysemas, Centrilobular,Emphysemas, Focal,Emphysemas, Panacinar,Emphysemas, Panlobular,Focal Emphysemas,Panacinar Emphysemas,Panlobular Emphysemas
D005260 Female Females
D005500 Follow-Up Studies Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease. Followup Studies,Follow Up Studies,Follow-Up Study,Followup Study,Studies, Follow-Up,Studies, Followup,Study, Follow-Up,Study, Followup
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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