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NHLBI

Lung VQ Scan

pulmonary ventilation (V)  perfusion (Q) scans 

A lung VQ scan is an imaging test that uses a ventilation (V) scan to measure air flow in your lungs and a perfusion (Q) scan to see where blood flows in your lungs. It uses special x ray scanners outside of your body to create pictures of air and blood flow patterns in your lungs.

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