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Ventilation Perfusion Scan (V/Q Scan)
Ventilation Perfusion (V/Q) Scan
A type of nuclear radiology procedure in which a tiny amount of a radioactive substance is used during the procedure to assist in the examination of the lungs. A ventilation scan evaluates ventilation, or the movement of air into and out of the bronchi and bronchioles. A perfusion scan evaluates blood flow within the lungs.