MR angiography (MRA) is a non-invasive MRI technique that images blood vessels throughout the body without catheters and without ionizing radiation. Many MRA exams are performed without contrast dye, using flow-based techniques such as Time of Flight (TOF) or Steady State Free Precession (SSFP).
Also called: MRA · Magnetic resonance angiography
What conditions does MRA evaluate?
MRA is used to assess arteries anywhere blood flow may be compromised.
- Aortic aneurysms and dissections
- Carotid artery disease affecting blood supply to the brain
- Renal artery stenosis
- Peripheral arterial disease in the legs and arms
- Congenital heart and vessel disorders
- Vasculitis (blood vessel inflammation)
How does MRA compare to catheter angiography?
Catheter angiography is an invasive procedure that threads a catheter into the arteries. MRA produces detailed vessel images without that risk — and many surgeons now proceed to the necessary operation after confirmation with MRA, dispensing with catheter angiography altogether.
How do I prepare?
Standard MRI preparation — we provide scrubs for every patient, no jewelry, implant screening. Hydrate normally unless told otherwise.
Where can I get this exam?
MR Angiography is available at all nine of our west-central Florida centers. One call reaches every location — we will schedule you wherever the soonest opening is, usually the same week.
Schedule an exam Find your location
Medically reviewed by the board-certified radiologists of MRI Associates · Updated 2026-08-25