What is a ventilation perfusion scan?

Also known as: pulmonary ventilation/perfusion scan, VQ scan.

A ventilation/perfusion scan is a diagnostic nuclear medicine series of two imaging tests used to look at how air and blood circulates in your child’s lungs.

• The first scan, (known as a VQ or ventilation quotient scan) measures how well air flows into all parts of the lungs.
• The second (a perfusion scan), measures how well blood circulates within the lungs.

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Reviewed by: Jack Wolfsdorf, MD, FAAP

This page was last updated on: 1/29/2019 3:21:13 PM