Lung perfusion and ventilation scans

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Learn how lung perfusion and ventilation scans check the flow of blood towards and around the lungs.

Key points

  • A lung perfusion scan tests how well blood flows to the lungs. A lung ventilation scan tests how well air and blood flow around the lungs.
  • The lung ventilation scan involves breathing in and out a tiny amount of radioactive mist for five minutes before a special camera takes pictures of the lungs.
  • The lung perfusion scan involves injecting a tiny amount of radioactive medicine into the blood and then taking pictures of the lungs to check how well it is reaching them.
  • A nuclear medicine doctor will send the results of the scan to your family doctor or paediatrician (child's doctor) within two working days. The person who does the scan cannot give the results.
Last updated: February 1st 2013