magnetic resonance angiography

Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.

MR an·gi·og·ra·phy (MRA),

imaging of blood vessels using special magnetic resonance (MR) sequences that enhance the signal of flowing blood and suppress that from other tissues.

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.
enlarge picture
Magnetic resonance angiography

magnetic resonance angiography

A term for the magnetic resonance imaging of selected vascular structures—e.g., circle of Willis or the carotid arteries.

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.

mag·net·ic res·o·nance an·gi·og·ra·phy

(MRA) (mag-net'ik rez'ŏ-năns an'jē-og'ră-fē)
Method of visualizing vessels that contain flowing nuclei by producing a contrast between them and the stationary nuclei.

Magnetic resonance angiography

A noninvasive diagnostic technique that uses radio waves to map the internal anatomy of the blood vessels.
Mentioned in: Cerebral Aneurysm
References in periodicals archive ?
Incidence of actionable findings on contrast enhanced magnetic resonance angiography ordered for pulmonary embolism evaluation.
Li, "Whole-heart coronary magnetic resonance angiography at 3 Tesla in 5 minutes with slow infusion of Gd-BOPTA, a high-relaxivity clinical contrast agent," Magnetic Resonance in Medicine, vol.
Evaluating patients with renal failure for renal artery stenosis with gadolinium-enhanced magnetic resonance angiography.
Echocardiography is not useful and magnetic resonance angiography did not produce consistent results.
When using magnetic resonance angiography rather than catheter angiography we advocate the inclusion of gadolinium contrast and three-dimensional time-of-flight techniques to better demonstrate the position of the tumor relative to the carotid bifurcation.
They also had to pass a screen using magnetic resonance angiography to be sure that they didn't have any severe arterial lesions.
He also reports that the program will include discussion of contrast-enhanced magnetic resonance angiography, which is an "off-label" usage of a commercial product.
Recently, noncontrast magnetic resonance angiography has begun to challenge conventional angiography, establishing itself as a highly accurate modality for screening examinations of the vasculature of the head and neck.
GBCAs are used off label for magnetic resonance angiography, but "'some radiologists believe that these agents help provide detailed images of blood vessels," according to the FDA.
Other topics include the clinical application of noninvasive vascular imaging, magnetic resonance angiography, hemodialysis access, and bypass grafts.
Finally, findings on computed tomography (CT) of the head and neck (with thin cuts through the temporal bones and internal auditory canal), magnetic resonance imaging (MRI) of the brain, and magnetic resonance angiography (MRA) of the brain were all normal.

Full browser ?