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Canadian Respiratory Journal
Volume 19, Issue 1, Pages 41-43
http://dx.doi.org/10.1155/2012/675743
Case Report

Hyperpolarized 3He Functional Magnetic Resonance Imaging of Bronchoscopic Airway Bypass in Chronic Obstructive Pulmonary Disease

Lindsay Mathew,1,2 Miranda Kirby,1,2 Donald Farquhar,3 Christopher Licskai,3 Giles Santyr,1,2 Roya Etemad-Rezai,4 Grace Parraga,1,2,4 and David G McCormack3

1Imaging Research Laboratories, Robarts Research Institute, Canada
2Department of Medical Biophysics, University of Western Ontario, London, Ontario, Canada
3Division of Respirology, Department of Medicine, University of Western Ontario, London, Ontario, Canada
4Department of Medical Imaging, University of Western Ontario, London, Ontario, Canada

Copyright © 2012 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A 73-year-old exsmoker with Global initiative for chronic Obstructive Lung Disease stage III chronic obstructive pulmonary disease underwent airway bypass (AB) as part of the Exhale Airway Stents for Emphysema (EASE) trial, and was the only EASE subject to undergo hyperpolarized 3He magnetic resonance imaging for evaluation of lung function pre- and post-AB. 3He magnetic resonance imaging was acquired twice previously (32 and eight months pre-AB) and twice post-AB (six and 12 months post-AB). Six months post-AB, his increase in forced vital capacity was <12% predicted, and he was classified as an AB nonresponder. However, post-AB, he also demonstrated improvements in quality of life scores, 6 min walk distance and improvements in 3He gas distribution in the regions of stent placement. Given the complex relationship between well-established pulmonary function and quality of life measurements, the present case provides evidence of the value-added information functional imaging may provide in chronic obstructive pulmonary disease interventional studies.