Genentech Xenon MRI Idiopathic Pulmonary Fibrosis

The purpose of this study is being done to determine whether magnetic resonance imaging (MRI) using inhaled hyper-polarized 129 Xenon gas can help visualize impaired lung function to detect changes over time in Idiopathic Pulmonary Fibrosis (IPF) patients receiving approved IPF treatments. Participants will undergo an approximately hour long comprehensive MRI protocol, including administration of multiple doses of hyper-polarized 129 Xenon. The subjects will have this initial study prior to initiation of IPF therapies. Then the participants will have repeat studies at 3, 6 and 12 months following the initiation of therapy.