A 53-year-old woman with progressive mild dyspnea and hypoxia for many years.

A 51-year-old woman undergoing preoperative imaging prior to cardiac catheterization for stable angina.

A 72-year-old man with slowly progressive shortness of breath and a history of a bilateral lung transplant.

A 29-year-old woman undergoing follow-up imaging for an abnormal second-trimester fetal ultrasound scan.

A 69-year-old woman with Sjögren's syndrome presents with dyspnea and cough.

A 45-year-old man with a history of orthotopic heart transplantation presents with cough.

A 34-year-old man with an acute-on-chronic productive cough. 

A 72-year-old man with neutropenia and fever.

A 35-year-old woman with worsening chest pain and dyspnea over the past week that has acutely worsened in the last few hours.

A 49-year-old woman with multiple echogenic foci of the liver.

A 17-year-old girl presents with acute-onset shortness of breath for the last 24 hours.

A 77-year-old man with a chronic, nonproductive cough and mild dyspnea for the last 12 months.

A 26-year-old woman with intermittent chest tightness, dyspnea, and jugular venous distension that have been worsening for the last year.

A 65-year-old woman with progressive shortness of breath over the past few weeks. 

A 67-year-old woman undergoing a chest CT scan after a motor vehicle collision.

A 70-year-old woman with a worsening chronic cough for the last six months.

A 62-year-old woman with a chronic cough and a 30-pack-year history of smoking.

A 71-year-old man with a chronic cough for the past four months.

A 72-year-old man with recent respiratory distress now with crepitus on examination.

An 80-year-old man with dyspnea and hypotension after a fall.