Eligibility Details:  
        Inclusion Criteria:
          -  Group 1: Healthy subjects (n=5)
          -  Age greater than 18 years
          -  Be deemed healthy at screening visit as determined by the physician investigator or
             nurse practitioner, based on the following assessments at Screening: physical
             examination, medical history, and vital signs
          -  Have the ability to give written informed consent;
          -  No known history of pulmonary disease (excluding pulmonary nodules);
          -  No prior history of tobacco use.
        Group 2: Lung cancer patient subjects (n=10)
          -  Eligible patients will be those harboring locally advanced clinical stage IIIA NSCLC
             who are deemed candidates for multi-modality therapy, i.e. concurrent chemotherapy and
             radiation followed by pulmonary resection.
          -  Age greater than 18 years
          -  Have the ability to give written informed consent.
          -  No tobacco use within the prior 6 months.
        Group 3: Subjects with IPF (n=10)
          -  Definite IPF as defined by ATS/ERS/JRS/ALAT International Consensus Statement on IPF;
          -  Age: 50-80 years old;
          -  Have the ability to give written informed consent;
          -  No tobacco use within the prior 6 months
        Exclusion Criteria:
          -  Electrical implants such as cardiac pacemaker or perfusion pump;
          -  Ferromagnetic implants such as aneurysm clips, surgical clips, prostheses, artificial
             hearts, valves with steel parts, metal fragments, shrapnel, metallic tattoos anywhere
             on the body, tattoos near the eye, or steel implants ferromagnetic objects such as
             jewelry or metal clips in clothing;
          -  Pregnant or breastfeeding (a negative quantitative serum hCG pregnancy test is
             required for females having child-bearing potential before the subject can
             participate);
          -  Claustrophobic reactions;
          -  Research-related radiation exposure exceeds current Radiology Department guidelines
             (i.e. 50 mSv in the prior 12 months);
          -  Unable to lie comfortably on a bed inside the MR-PET;
          -  Body weight of > 300 lbs (weight limit of the MRI table);
          -  Determined by the investigator(s) to be clinically unsuitable for the study (e.g.
             based on screening visit and/or during study procedures);
          -  Known history of pulmonary disease (except for IPF in the study group), recent
             pneumonia or respiratory tract infections within 6 weeks of enrollment, prior
             radiation therapy to the thorax (except for the lung cancer patients in aim 2);
          -  Pneumonia or other acute respiratory illness within 6 weeks of study entry (except for
             IPF), pneumonia defined with elevated WBC, fever, infiltrate on CXR and need for
             antibiotics
        Exclusion criteria specific to Group 2:
        - Stage IIIA NSCLC patients who undergo definitive bimodality therapy, i.e. chemotherapy
        and radiation without resection will be excluded.