A<unk><unk>  lung<unk> , also called a V/Q lung<unk> , or<unk> tigraphy, is a type of medical imaging using scintigraphy and medical isotopes to evaluate the circulation of air and blood within a patient's lungs, in order to determine the<unk><unk>  ratio. The<unk>  part of the test looks at the ability of air to reach all parts of the lungs, while the<unk>  part evaluates how well blood circulates within the lungs. As Q in physiology is the letter used to describe bloodflow the term<unk>  emerged.
Ventilation/perfusion scan
Carbon dioxide angiography
Perfusion scanning
Intravascular fluorescence
Intravascular imaging
Microangiography
Pulmonary angiography
Digital subtraction angiography