| Ventilation/perfusion scan | |
|---|---|
 Normal pulmonary ventilation and perfusion (V/Q) scan. The nuclear medicine V/Q scan is useful in the evaluation of pulmonary embolism. | |
| OPS-301 code | 3-703.2 |
A ventilation/perfusion lung scan, also called a V/Q lung scan, or ventilation/perfusion scintigraphy, is a type of medical imaging using scintigraphy and medical isotopes to evaluate the circulation of air and blood within a patient's lungs,[1][2] in order to determine the ventilation/perfusion ratio. The ventilation part of the test looks at the ability of air to reach all parts of the lungs, while the perfusion part evaluates how well blood circulates within the lungs. As Q in physiology is the letter used to describe bloodflow the term V/Q scan emerged.
- ^ "Pulmonary ventilation/perfusion scan". University of Maryland Medical Center. Retrieved 3 January 2018.
- ^ Mortensen, Jann; Berg, Ronan M.G. (1 January 2019). "Lung Scintigraphy in COPD" (PDF). Seminars in Nuclear Medicine. 49 (1): 16–21. doi:10.1053/j.semnuclmed.2018.10.010. PMID 30545511. S2CID 56486118. Retrieved 4 July 2021.