Magnetic resonance imaging (MRI) is a radiological process that creates fine detailed images of the body without exposure to radiation. The radiofrequency waves produced in the presence of a strong magnetic field can generate cross sectional images that are then reconstructed as 3 dimensional pictures by a computer.
Magnetic Resonance Angiography (MRA) is a modification of the same process that helps to create a visual of the blood vessels in the body. The images of the blood vessels are very detailed and can be seen in all dimensions. The dye injected helps to show blood vessels in most parts of the body. MRA is the preferred testing option in individuals with a stroke, aneurysm and blood vessel problems in diabetics.
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