A pulmonary ventilation/perfusion scan involves two nuclear scan tests to measure breathing (ventilation) and circulation (perfusion) in all areas of the lungs.
V/Q scan; Ventilation/perfusion scan; Lung ventilation/perfusion scan
How the Test is Performed
A pulmonary ventilation/perfusion scan is actually two tests. They may be done separately or together.
During the perfusion scan, a health care provider injects radioactive albumin into your vein. You are placed on a movable table that is under the arm of a scanner. The machine scans your lungs as blood flows through them to find the location of the radioactive particles.
During the ventilation scan, you breathe in radioactive gas through a mask while you are sitting or lying on a table under the scanner arm.