What is MR angiography?

MRI angiography (MRA for short) is a specialized form of magnetic resonance imaging. It is used to visualize blood vessels without the need for surgery.

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What is special about MRI angiography?

While a conventional MRI primarily images bones, muscles, tendons, or organs, MR angiography specifically targets arteries and veins. This allows for the early diagnosis of narrowing of blood vessels, bulges (aneurysms), blockages, or other abnormalities.

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How does an MRA work?

The examination uses the same technology as a standard MRI and relies on strong magnetic fields and radio waves. Depending on the specific purpose of the examination, it may be performed with or without a contrast agent. In many cases, the contrast agent improves the visualization of blood vessels, but it is not always necessary.

When is an MR angiography used?

MRA is used, among other things, for:

Suspected vascular narrowing
Circulatory disorders
Vascular occlusions
Aneurysms
Vascular malformations
Preparation for or follow-up after vascular surgery

It can also provide important clues in cases of unclear symptoms such as dizziness or certain neurological symptoms.

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What are the benefits of an MR angiography?

Unlike traditional catheter angiography, MRA does not require a catheter to be inserted into a blood vessel. The procedure is performed externally, is therefore noninvasive, and does not involve X-rays.

Other advantages include:

High-resolution image of blood vessels

Can often be performed without contrast agents

Early detection of vascular diseases

A gentle and comfortable examination

Are there any differences compared to CT angiography?

Yes, CT angiography uses X-rays and almost always requires an iodine-based contrast agent. MRI angiography, on the other hand, does not use X-rays and is particularly well-suited for evaluating the neck, brain, and blood vessels. The choice of which method is appropriate in each individual case depends on the specific medical issue.

For an orthopedic and neurosurgical practice such as the Roseneck Medical Center, MR angiography is particularly relevant when vascular abnormalities in the neck, brain, or spine need to be evaluated, or when circulatory disorders are suspected as the cause of neurological symptoms.