magnetic resonance angiography

angiography /an·gi·og·ra·phy/ (an″je-og´rah-fe) vasography; radiography of the blood vessels after introduction of a contrast medium.angiograph´ic

---

intra-arterial digital subtraction angiography  a radiologic imaging technique for arteriography that uses electronic circuitry to subtract the background of bone and soft tissue from the image of the arteries, which have been injected with contrast material.

intravenous digital subtraction angiography  a fluoroscopic imaging technique in which electronic circuitry is used to subtract the background of bone and soft tissue and provide a useful image of vessels following the injection of contrast medium.

magnetic resonance angiography  (MRA) a form of magnetic resonance imaging used to study blood vessels and blood flow.

---

Magnetic resonance angiography

A noninvasive diagnostic technique that uses radio waves to map the internal anatomy of the blood vessels.

Mentioned in: Cerebral Aneurysm

---

magnetic resonance angiography,

the use of special MR imaging pulses to visualize the vascular system and identify regions of nonflowing blood. It may be performed with or without contrast agents.

---

magnetic resonance angiography

Peripheral MR angiography Imaging An imaging technique in which a contrast dye is injected into a blood vessel and magnetic resonance is used to create an image of the flowing blood through the vessel; often used to detect stenosis of the cerebral arteries. See Contrast enhanced method–MRI, Phase contrast method–MRI, Time-of-flight method.