A new quantitative index of lobar air trapping in chronic obstructive pulmonary disease (COPD): comparison with conventional methods.

Abstract

PURPOSE To determine the usefulness of newly-proposed index (attenuation-volume index, AVI: increase in mean value of lung attenuation (MVLA) divided by volume decrease ratio (VDR)) for quantitative assessment of lobar air trapping (LAT) using expiratory/inspiratory (E/I) computed tomography (CT) by minimizing influence of respiratory level. MATERIALS AND… (More)
DOI: 10.1016/j.ejrad.2014.12.018

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