A Magnetic Resonance Angiogram (MRA) of the cardiovascular system is a minimally invasive medical test that uses MRI technology and in some cases contrast material to produce pictures of major blood vessels throughout the body. The test uses a powerful magnetic field, radio waves, and a computer produce the detailed images.

A computer processes the radio wave signals and generates a series of detailed images. The computer compiles the images into three-dimensional representations of the body that can be studied from many different angles on a computer monitor.

During the MRA study, contrast material may be administered to generate clearly defined images of blood flow throughout specific areas of the vascular system.