page_title: Computed tomography angiography
section_title: Renal arteries
hierarchical_section_title: Computed tomography angiography / Medical uses / Renal arteries
caption_attribution_description: Computed tomography angiography in a patient with medial dibromuscular dysplasia.
context_page_description: Computed tomography angiography is a computed tomography technique used to visualize arterial and venous vessels throughout the body. Using contrast injected into the blood vessels, images are created to look for blockages, aneurysms, dissections, and stenosis. CTA can be used to visualize the vessels of the heart, the aorta and other large blood vessels, the lungs, the kidneys, the head and neck, and the arms and legs.
context_section_description: Visualization of blood flow in the renal arteries (those supplying the kidneys) in patients with high blood pressure and those suspected of having kidney disorders can be performed using CTA. Stenosis (narrowing) of a renal artery is a cause of hypertension (high blood pressure) in some patients and can be corrected. A special computerized method of viewing the images makes renal CT angiography a very accurate examination. CTA is also used in the  assessment of native and transplant renal arteries. While CTA is great for imaging of the kidneys, it lacks the ability to perform procedures at the same time. Thus traditional catheter angiography is used in cases of acute renal hemorrhage or acute arterial obstruction.
caption: Volume rendered CTA of renal arteries in patient with medial fibromuscular dysplasia.
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