A Ventilation/Perfusion Lung Scan (V/Q scan) s a specialised scan of the lungs, which displays the ventilation and blood flow inside the lungs. A V/Q scan is usually performed to determine if the patient has a pulmonary embolus or blood clot in the lungs. However, there are numerous reasons why this scan is performed and you should talk to your doctor about this.
- The patient is asked to breathe in a radioactive gas and then imaging of the airways is performed.
- An intravenous injection of a radioactive material is given and a second set of images is acquired.
- The 2 sets of images are compared.
- There are no side effects from the gas or injection, this scan takes approx. 45 mins.