magnetic resonance angiography n magnetic resonance imaging used to visualize noninvasively the heart, blood vessels, or blood flow in the circulatory system abbr. MRA called also MR angiography
* * *
(MRA) a form of magnetic resonance imaging used to study blood vessels and blood flow, used for detection of abnormalities in the vessels of the head and neck, for evaluation of the peripheral vasculature of the lower extremities, and for the detection of coronary artery disease.Medical dictionary. 2011.