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    Computed Tomography Measurement of Rib Cage Morphometry in Emphysema

    235632_235632.pdf (1.110Mb)
    Access Status
    Open access
    Authors
    Sverzellati, N.
    Colombi, D.
    Randi, G.
    Pavarani, A.
    Silva, M.
    Walsh, S.
    Pistolesi, M.
    Alfieri, V.
    Chetta, A.
    Vaccarezza, Mauro
    Vitale, M.
    Pastorino, U.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Sverzellati, N. and Colombi, D. and Randi, G. and Pavarani, A. and Silva, M. and Walsh, S. and Pistolesi, M. et al. 2013. Computed Tomography Measurement of Rib Cage Morphometry in Emphysema. PLoS ONE. 8 (7): Article ID e68546.
    Source Title
    PLoS ONE
    DOI
    10.1371/journal.pone.0068546
    School
    School of Biomedical Sciences
    Remarks

    This open access article is distributed under the Creative Commons license http://creativecommons.org/licenses/by/3.0/

    URI
    http://hdl.handle.net/20.500.11937/9613
    Collection
    • Curtin Research Publications
    Abstract

    Background: Factors determining the shape of the human rib cage are not completely understood. We aimed to quantify the contribution of anthropometric and COPD-related changes to rib cage variability in adult cigarette smokers. Methods: Rib cage diameters and areas (calculated from the inner surface of the rib cage) in 816 smokers with or without COPD, were evaluated at three anatomical levels using computed tomography (CT). CTs were analyzed with software, which allows quantification of total emphysema (emphysema%). The relationship between rib cage measurements and anthropometric factors, lung function indices, and %emphysema were tested using linear regression models. Results: A model that included gender, age, BMI, emphysema%, forced expiratory volume in one second (FEV1)%, and forced vital capacity (FVC)% fit best with the rib cage measurements (R2  = 64% for the rib cage area variation at the lower anatomical level). Gender had the biggest impact on rib cage diameter and area (105.3 cm2; 95% CI: 111.7 to 98.8 for male lower area). Emphysema% was responsible for an increase in size of upper and middle CT areas (up to 5.4 cm2; 95% CI: 3.0 to 7.8 for an emphysema increase of 5%). Lower rib cage areas decreased as FVC% decreased (5.1 cm2; 95% CI: 2.5 to 7.6 for 10 percentage points of FVC variation). Conclusions: This study demonstrates that simple CT measurements can predict rib cage morphometric variability and also highlight relationships between rib cage morphometry and emphysema.

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