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Lung V/Q Scan

What to Expect During the Procedure

This procedure is a two part test. The first part evaluates the ventilation function of the lungs. You will be seated in a chair and fitted with a breathing tube similar to a snorkeling apparatus and will be instructed to breathe through the tubing for approximately 5 minutes. The air breathed in is mixed with a radioactive tracer to visualize the air distribution within the lungs. When breathing is complete you will lie on the table on your back. Images are acquired in various positions for approximately 20 minutes. The second part of the study evaluates blood circulation in the lungs. You will receive an intravenous injection of a radioactive material in your hand or arm. Images are acquired in the same positions as the ventilation scan for approximately 20 minutes. If a chest x-ray has not been done in the past 24 hours or is not available for review, a routine chest x-ray will be done before you leave the facility. There are no common side effects.

How Should I Prepare?
  • There are no pre-procedure preparations for this scan.
  • A chest x-ray is required within 24 hours of the scan or we will perform one on site during the visit.
What to Expect After the Procedure

There are no post procedure instructions. Also, no driver is needed following this procedure. Reports are usually called to your physician the same day. Contact your physician for any information pertaining to the findings.