What tests would be used to check for pulmonary embolism? what are the symptoms of it?

Pulmonary Embolism: Laboratory tests such as D-Dimer are sometimes helpful but are not definitive. The 2 major tests used to directly assess the lungs are a CT Pulmonary Angiogram and a V/Q scan. Most commonly done is the CT pulmonary angiogram- it is usually very quickly done and provides good assessment of location and extent of PE. An echocardiogram can be used to see if there is any heart strain from a PE.