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. Author manuscript; available in PMC: 2010 Dec 1.
Published in final edited form as: J Allergy Clin Immunol. 2009 Dec;124(6 Suppl):S78–S83. doi: 10.1016/j.jaci.2009.10.002

Figure 1.

Figure 1

Figure 1

Figure 1A and 1B. Lung attenuation curves from individual subjects using matched right upper lobe images pre- and post-methacholine at baseline and post-treatment A) with BDP CFC and B) with BDP HFA. The small particle inhaled steroid (HFA BDP) blocks the increase in airtrapping following methacholine. MC = methacholine. HU = Hounsfield units (more negative number represents more airtrapping). Study performed at residual volume.