One of the definitive diagnostic methods used to diagnose pulmonary embolism is lung scintigraphy. Pulmonary embolism or pulmonary infarction is an emergency that requires timely treatment, accurate and rapid diagnosis is important to help reduce the mortality rate caused by this disease.

Lung ventilation perfusion scintigraphy is an advanced nuclear scanning technique used to find blood clots blocking normal blood flow in the lungs (pulmonary embolism).