Lung Perfusion with Quantification

What is a Lung perfusion scan?

  • Lung Perfusion measures how well blood circulates within the lungs.

Potential reasons for exams? 

  • Evaluate lung transplants.
  • Evaluate chronic pulmonary parenchymal disorders such as cystic fibrosis.
  • Evaluate pulmonary perfusion and ventilation after cardiac and pulmonary artery surgery
  • Determine the likelihood of an acute pulmonary embolism
  • Quantify differential pulmonary function before pulmonary and cardiac surgery
  • Document the degree of resolution of pulmonary embolism
  • Confirm the presence of bronchopleural fistula (in layperson terms: “air leak”) 
  • Evaluate the cause of pulmonary hypertension and to rule out chronic thromboembolic pulmonary hypertension (CTEPH)

What happens during the procedure?

  • An IV is placed and a short-lived safe radioactive tracer called technetium-99M is injected. Your child will lay on their back and have images taken by a special gamma scanner. The overall scan should take 15 minutes.

Are any special preparations needed?

  • In most cases, no special preparation is needed.

What are the risk factors?

  • The procedure is safe. An intravenous catheter may cause some pain. The radiation exposure is considered minimal.

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