A 50-year-old male presents with sudden onset dyspnea and pleuritic chest pain after a long-haul flight. He is tachycardic and has decreased breath sounds on the right side. MCQ: What is the most appropriate imaging study to confirm the diagnosis? A) Chest X-ray B) Ventilation-perfusion (V/Q) scan C) CT pulmonary angiography D) Ultrasound of the legs Answer: C) CT pulmonary angiography Explanation: CT pulmonary angiography is the gold standard for diagnosing pulmonary embolism. It allows for direct visualization of pulmonary arteries and can confirm or rule out the presence of emboli. Overview: In cases of suspected pulmonary embolism, timely imaging is critical to confirm the diagnosis and initiate appropriate treatment to prevent complications.