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Renal MR angiography

A Renal MR angiography is a mri test of the kidney arteries. It shows narrowed kidney arteries. No ionising radiation (magnetic field and radio waves).

General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.

What it shows

Narrowed kidney arteries.

Why it is done

Resistant high blood pressure.

Preparation

Remove all metal. Tell staff about pacemakers, implants, metal fragments, kidney disease or pregnancy. Ear protection is given; tell staff if you are claustrophobic.

Radiation & safety

No ionising radiation (magnetic field and radio waves). Safe in pregnancy (MRI: discuss in the first trimester; avoid gadolinium contrast unless essential).

How long it takes

30 to 45 minutes. General information, not a diagnosis. Results must be interpreted by a qualified health worker.

Sample type

MRI

Consult a doctor to interpret results — a single test does not make a diagnosis.

Related conditions

entry-health-condition-hypertension

Where to get this near you

Care near you

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Common questions

What does a renal mra show?
Narrowed kidney arteries.

Why is a renal mra done?
Resistant high blood pressure.

How do I prepare for a renal mra?
Remove all metal. Tell staff about pacemakers, implants, metal fragments, kidney disease or pregnancy. Ear protection is given; tell staff if you are claustrophobic.

Does a renal mra use radiation?
No ionising radiation (magnetic field and radio waves). Safe in pregnancy (MRI: discuss in the first trimester; avoid gadolinium contrast unless essential).

How long does a renal mra take?
30 to 45 minutes

Why is Renal MR angiography done?
Resistant high blood pressure.

How do I prepare for Renal MR angiography?
Remove all metal. Tell staff about pacemakers, implants, metal fragments, kidney disease or pregnancy. Ear protection is given; tell staff if you are claustrophobic.

Is Renal MR angiography safe in pregnancy?
No ionising radiation (magnetic field and radio waves). Safe in pregnancy (MRI: discuss in the first trimester; avoid gadolinium contrast unless essential).

SI text CC BY 4.0; RadiologyInfo.org (ACR/RSNA) and MedlinePlus linked as references only, no text copied.

Sources: SI health summary (own words); decoder imaging pack; RadiologyInfo.org and MedlinePlus as references only

Emergency — call102