Patient description: A 31 yo male with no significant past medical history presents with productive cough and chest pain. He reports developing cold symptoms one week ago that were improving until two days ago, when he developed a new fever, chills, and worsening cough. He has right-sided chest pain that is aggravated by coughing. His wife also had cold symptoms a week ago but is now feeling well. Vitals signs include temperature 103.4, pulse 105, blood pressure 120/80, and respiratory rate 15. Lung exam reveals expiratory wheezing, decreased breath sounds, and egophany in the left lower lung field.

Clinical trial eligibility criteria: eligible ages (years): 40.0-999.0,  Idiopathic Pulmonary Fibrosis Males/females aged 40 years and over, at the time of signing the informed consent A female patient is eligible to participate if she is of: Non child-bearing potential, where females are post-menopausal, defined as 12 months of spontaneous amenorrhea [in questionable cases a blood sample with simultaneous follicle stimulating hormone (FSH) >40 milliinternational units per milliliter (MlU/mL) and estradiol < 40 picograms per mililiter (pg/mL) (<147 pmol/L) is confirmatory. Peri-menopausal or pre-menopausal, and have a negative pregnancy test as determined by serum or urine human chorionic gonadotropin (hCG) test, confirmed at screening, and then at each subsequent clinic visit before the CT scanning is conducted BMI within the range 18 kilogram per meter^2 (kg/m^2) (inclusive) Capable of giving written informed consent, which includes compliance with the requirements and restrictions listed in the consent form Patients will have a diagnosis of IPF as determined by a responsible and experienced Respiratory physician and based on established defined by the American Thoracic Society/European Respiratory Society: American Thoracic Society/European Respiratory Society International Multidisciplinary Consensus Classification of the Idiopathic Interstitial Pneumonias Patient's lung function measurements of Forced vital capacity (FVC) and Diffusing capacity of the Lung for Carbon Monoxide (DLCO) at screening must fall within the category below to be included in this study: FVC >=40 % predicted and DLCO >=30 % predicted  Patients with a current Idiopathic Pulmonary Fibrosis (IPF) exacerbation Patients with a known underlying cause of pulmonary fibrosis Patients that have both IPF and Chronic obstructive pulmonary disease (COPD) that requires therapy with more than an intermittent bronchodilator or a long acting muscarinic antagonist, or where the Forced Expiratory Volume in One Second (FEV1)/ Forced vital capacity (FVC) ratio is <0.65 Patients with an upper or lower respiratory tract infection within four weeks of Visit 1 Patients with a recognised co-existing respiratory disorder other than usual interstitial pneumonia (UIP) (e.g. significant COPD, asthma, sarcoid, lung carcinoma) that in the opinion of the investigator would confound the study outcomes Patients with poorly controlled left ventricular heart failure Serious or uncontrolled medical, surgical or psychiatric disease that in the opinion of the investigator would compromise patient safety or confound the study data (e.g. congestive cardiac failure [CCF], asthma, angina, neurological disease, liver dysfunction and blood dyscrasia) Patients found to have clinically significant anaemia until adequately treated Patients that have a history of alcohol abuse Patients who are currently taking Pirfenidone for IPF or who have received Pirfenidone within the previous 30 days prior to Visit 1