Mismatched air and blood flow suggesting pulmonary embolism.
General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.
Mismatched air and blood flow suggesting pulmonary embolism.
Suspected PE when CT contrast is unsuitable (for example in pregnancy).
A small radioactive tracer is injected or swallowed. Preparation depends on the test; tell staff if pregnant or breastfeeding, as feeding may need a pause.
Typical effective dose 1 to 2 mSv, similar to about 4 to 8 months of natural background radiation (about 3 mSv a year). Tell staff if you are or might be pregnant; the benefit usually outweighs the small risk, and shielding or alternatives can be considered.
about 1 hour. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
Consult a doctor to interpret results — a single test does not make a diagnosis.
Uses your location once to list the nearest facilities. Nothing is stored.
Why is Ventilation-perfusion (V/Q) scan done?
Suspected PE when CT contrast is unsuitable (for example in pregnancy).
How do I prepare for Ventilation-perfusion (V/Q) scan?
A small radioactive tracer is injected or swallowed. Preparation depends on the test; tell staff if pregnant or breastfeeding, as feeding may need a pause.
Is Ventilation-perfusion (V/Q) scan safe in pregnancy?
Typical effective dose 1 to 2 mSv, similar to about 4 to 8 months of natural background radiation (about 3 mSv a year). Tell staff if you are or might be pregnant; the benefit usually outweighs the small risk, and shielding or alternatives can be considered.
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