Magnetic resonance angiography (MRA) is a medical imaging technique that uses magnetic fields and radio waves to produce detailed images of the blood vessels inside the body. It is non-invasive and does not involve the use of radiation, making it a safe and effective option for patients.
MRA is often used to evaluate the blood vessels in the brain, neck, chest, and legs, as well as to assess the blood flow to the organs and tissues. It can be used to diagnose various conditions, such as aneurysms, stenosis (narrowing of the blood vessels), and blood clots, as well as to monitor the progress of treatment for these conditions.
To perform an MRA, the patient lies on a table inside a large, cylindrical machine called a magnetic resonance imaging (MRI) scanner. The MRI scanner generates a strong magnetic field and radio waves, which cause the protons in the patient’s body to align and produce a detectable signal. This signal is used to create detailed images of the body’s internal structures.
During the MRA, the patient may be given a contrast agent, such as gadolinium, to help improve the visibility of the blood vessels. The contrast agent is typically injected into a vein in the arm and travels through the bloodstream, allowing the MRA to produce clearer images of the blood vessels.
MRA is generally a painless and safe procedure, although some patients may experience mild discomfort or anxiety while inside the MRI scanner. It is important to inform the technologist or radiologist of any allergies or medical conditions, as well as any medications that the patient is taking, prior to the MRA.
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