Pulmonary angiography is a test that studies blood ... During the procedure, dye is injected into a vein in your arm and travels to the blood vessels in your lungs. As you lie inside the CT ...

which can assess the flow of blood in veins. If your doctor suspects a clot in your lungs, you might undergo a chest computerized tomography (CT) scan with a simultaneous pulmonary angiogram.

A multicenter study by the PIOPED III Investigators has shown that magnetic resonance angiography (MRA) can be used to detect pulmonary embolism. The proportion of technically inadequate images ...