MRA is a study of the blood vessels using magnetic resonance
imaging (MRI). Using a large magnet, radio waves, and a
computer, an MRA makes two-dimensional and three-dimensional
pictures. Reasons for Test This test is done in order to: -
Identify diseased, narrowed, enlarged, and blocked blood vessels
- Locate internal bleeding MRIs can be harmful if you have metal
inside your body such as joint replacements or a pacemaker. Make
sure your doctor knows of any internal metal before the test.
Some people may also have an allergic reaction to the contrast
dye. Talk to your doctor about any allergies you have. Also, let
your doctor know if you have liver or kidney problems. These may
make it difficult for your body to get rid of the contrast. What
to Expect Prior to Test Before the test, your doctor may: - Ask
about your medical history - Perform a physical exam - Do blood
tests If your doctor prescribes a sedative: - Arrange for a ride
home. - Do not eat or drink for at least four hours before the
exam. - Take th