1. Typical example of posterior–anterior scans of the lungs after inhaling Technegas on day 1 (control; a) and after increasing doses of methacholine (b–d).
Typical example of posterior–anterior scans of the lungs after inhaling Technegas on day 1 (control; a) and after increasing doses of methacholine (b–d). Note the enhanced distribution of the Technegas in the central areas of the lungs even with the smallest dose of the constrictor agent. Reproduced from [20] with permission from the publisher.
N.G. Koulouris, and G. Hardavella Eur Respir Rev 2011;20:
©2011 by European Respiratory Society