Chronic Obstructive Pulmonary Disease Clinical Trial
Official title:
A Pilot Study to Establish the Sensitivity of MR Imaging Markers to Changes in Regional Lung Function and Gas Washout in Patients With Mild-moderate COPD
Chronic Obstructive Pulmonary Disease (COPD) is a leading and still increasing cause of
disease and death worldwide, affecting those in both developed and developing countries. This
imparts a massive burden of ill health, in turn imposing huge healthcare costs to society.
For effective treatment of COPD (as opposed to providing short term relief) early disease
must be targeted. The small airways of the lung (those less than 2mm) are the first affected
in COPD, but current methods to assess their function are relatively insensitive. There is
therefore a need for new, accurate methods for detection of small airway dysfunction with
sensitivity to shortterm change and regional discrimination.
In previous studies with hyperpolarised (HP) 3He MRI in smokers with normal pirometry and
patients with early stage COPD, we showed sensitivity to early changes in lung ventilation
and structure. The hyperpolarised gas MRI technique is safe. In particular, the lack of
ionizing radiation permits patients to be imaged on multiple occasions. This and its inherent
sensitivity to regional lung ventilation and function make it an ideal imaging tool for the
assessment of novel lung therapies for diseases of the small airways.
The purpose of this pilot study is to determine short and long term reproducibility of a
comprehensive set of functional imaging data; using hyperpolarised gas MRI, conventional MRI
and lung physiology measurements in patients with moderate to severe COPD.
In addition,how sensitive the imaging techniques are to changes in lung function after
treatment with a standard (bronchodilator) inhaler will also be assessed.
This pilot study will serve as a platform for future larger scale studies, aimed at better
understanding of and intervention in early COPD.
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