Clinical Research Directory

Inclusion Criteria: * Subjects must have a diagnosis of COPD * at their clinical baseline on the day of imaging * must be clinically stable in order to participate in the study. * COPD subjects will be categorized according to the GOLD * Current/Former SmokerSubjects * must have a smoking history ≥ 10 pack years Exclusion Criteria: * Dx of asthma * Continuous oxygen use at home * Blood oxygen saturation of 92% less than as measured by pulse oximetry on the day of imaging * FEV1 percent predicted less than 25% * Pregnancy or lactation * Claustrophobia, inner ear implants, aneurysm or other surgical clips, metal foreign bodies in eye, pacemaker or other contraindication to MR scanning * Subjects with any implanted device that cannot be verified as MRI compliant will be excluded * Chest circumference greater than that of the xenon MR and/or helium coil. The circumference of the coil is approximately 42 inches * History of congenital cardiac disease, chronic renal failure, or cirrhosis * Inability to understand simple instructions or to hold still for approximately 10 seconds * History of respiratory infection within 2 weeks prior to the MR scan * History of MI, stroke and/or poorly controlled hypertension.