MRA Carotid With Contrast

Specimen Required

NONE

Fasting Required

Purpose of the Test

An MRA (magnetic resonance angiography) Carotid with Contrast is a diagnostic test used to evaluate the blood flow in the carotid arteries, which are located in the neck and supply blood to the brain. The test is ordered to detect any narrowing or blockages in the carotid arteries, which can increase the risk of stroke.

When this test is required

This test is typically ordered by a healthcare provider when a patient has symptoms suggestive of carotid artery disease or is at high risk for stroke due to other factors. It may also be ordered to monitor the progression of a known carotid artery disease or to evaluate the success of a treatment such as surgery or stenting.

What the Test Detects

During an MRA Carotid with Contrast, a contrast dye is injected into the patient’s vein, which helps to highlight the blood vessels in the carotid arteries. The patient then lies on a table that slides into a large, cylindrical machine that uses magnetic fields and radio waves to produce detailed images of the carotid arteries.

Preparation for the Test

Before the test, the patient will be instructed to remove any metal objects, such as jewelry or eyeglasses, and to wear comfortable clothing without any metal fastenings. The patient may also be instructed to avoid eating or drinking for a few hours before the test, depending on the specific instructions of the healthcare provider.

Sample Requirements

No sample is required for this test.

Additional Notes

The contrast dye used during an MRA Carotid with Contrast is generally safe, but there is a small risk of an allergic reaction. Patients with kidney problems may also be at risk for complications from the contrast dye, so it is important to inform the healthcare provider if you have any kidney problems. Additionally, because an MRI uses strong magnetic fields, patients with certain types of metal implants or devices, such as pacemakers or cochlear implants, may not be able to undergo the test.

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