RecruitingEarly Phase 1Drug trialPET Imaging CCR2 in Lung InflammationThe primary objective of this study is to assess the lung distribution of the Positron Emission Tomography (PET) imaging radiotracer Cu-DOTA-ECL1i, which binds to the specific population inflammatory cells, in patients with fibrotic lung diseases. This objective includes sub-studies to assess radiotracer distribution in the lung, the reproducibility of PET scans and the relationship of the scan to distribution of inflammatory cells in human lung tissue. The overall goal is to assess the potential of the radiotracer to track inflammatory cells in lung diseases.