19F MRI Healthy vs. CF

Researchers are collecting data on lung imaging to evaluate how well a person's lungs are working which will provide additional information about lung disease and how such diseases respond to treatment. The purpose of this study is to evaluate the use of inert (non-reactive) gas mixed with oxygen as contrast agent to image the airway spaces in normal human lungs and the lungs of persons with cystic fibrosis. A contrast agent helps the investigator to see spaces inside your lungs that are normally not visible. These images will be compared with spirometry (a non-imaging measure of global lung function used routinely in the clinic).