Pulmonary ventilation/perfusion scan
Alternate Names : V/Q scan, Ventilation/perfusion scan, Lung ventilation/perfusion scan
Normal Values
The health care provider should take a ventilation and perfusion scan and then evaluate it with a chest x-ray. All parts of both lungs should take up the radioisotope evenly.
What do Abnormal Results Mean?
If the lungs take up lower than normal amounts of radioisotope during a ventilation or perfusion scan, it may be due to:
- Airway obstruction
- A problem with blood flow (such as occlusion of the pulmonary arteries)
- Damage from chronic smoking or COPD
- Pneumonia
- Pneumonitis
- Pulmonary embolus
- Reduced breathing and ventilation ability
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