Healthy Volunteers Clinical Trial
Official title:
Healthy Lung Study- Development of 3 Tesla MRI Hardware and Software for Helium-3 Gas Imaging of the Lung: Healthy Volunteer Development Study
Healthy volunteers aged 18-75 will undergo hyperpolarized 3-Helium MRI and pulmonary function testing for the development of tools to assess image signal to noise and reproducibility of spin-density and diffusion-weighted imaging.
During a two hour visit, subjects will provide written informed consent and then undergo: 1) brief medical history and vital signs, 2) full pulmonary function tests, 3) proton MRI, 4) spin-density and/or diffusion weighted 3He MRI. Full pulmonary function tests including spirometry, plethysmography and diffusing capacity of carbon monoxide (DLCO), Lung Clearance Index (LCI) and Airwave Oscillometry (AO) will be performed according to ATS guidelines. MedGraphics Elite Series, MedGraphics Corporation. St. Paul, MN USA and/or nDD EasyOne Spirometer, nDD Medical Technologies Inc. Andover, MA USA will be used. All measurements will be performed in the Pulmonary Function Laboratory at Robarts Research Institute. Subjects will be placed in the 3T MR scanner with the 3He chest coil fitted over their torso and chest. Hearing protection will be provided to each subject to muffle the noise produced by the gradient RF coils. A pulse oximeter lead will be attached to all of the subjects to monitor their heart rate and oxygen saturation. MRI will be performed for up to a period of 30 minutes. All subjects will have supplemental oxygen available via nasal cannula at a flow-rate of 2 liters per minute as a precaution in the event of oxygen desaturation. ;
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