SILO2 (Signal Intensity Lung washOut)

"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 (the bronchodilator foradil is a non-investigative medicinal product as it is a medicine with a known effect which will be used to induce a known response).~This pilot study will serve as a platform for future larger scale studies, aimed at better understanding of and intervention in early COPD."