MRI
MRA (Magnetic Resonance Angiography)

MRA provides MRI images of blood flow through a vessel. MRA is most frequently used to evaluate suspected narrowing (stenosis) of the carotid arteries (in the neck) and to locate suspected aneurysm in the brain. MRA is sometimes used to detect renal artery stenosis, aortic aneurysms and other vascular disease.

In some circumstances, MRA examinations, which usually do not require the use of contrast agents, may provide an alternative to more invasive angiogram / arteriogram procedures.