Chronic Obstructive Pulmonary Disease Clinical Trial
Official title:
Hyper Polarized Xenon-129 MRI vs Xenon-133 Scintigraphy
Hyper polarized Xenon-129 MRI will be directly compared to a radioactive Xe-133 scintigraphy to detect defects in lung ventilation from airflow limitation. This study is conducted as a pilot study with intention to conduct a larger clinical trial.
Hyperpolarized Xenon-129 MRI has been developed by a number of techniques for imaging the lung that provide information about various aspects of lung function and structure. The main objective of this pilot study is to test and optimize the imaging parameters for a future industry sponsored clinical trial. The goal of the future trial is to determine the concordance between hyperpolarized xenon-129 ventilation MR imaging and nuclear medicine ventilation imaging (Gold Standard). In this study we will test the imaging parameters and techniques. We will directly compare human ventilation lung images in subjects with COPD, using nuclear medicine ventilation imaging with Xenon-133 gas scintigraphy versus hyperpolarized xenon-129 gas MRI. Our hypothesis is that current Xe-133 scintigraphy, which uses a radioactive gas (Xe-133) and produces a projection image of the lungs with relatively poor resolution, will not be able to detect small lung ventilation obstructions, which can be detected using hyperpolarized Xe-129 gas MRI. ;
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