Renal CTA (CT of the arteries supplying blood to the kidneys) is performed for patients with elevated blood pressure or impaired kidney function suspected of being due to blockage of the arteries supplying the kidneys.
Renal CTA is commonly used to visualize blood flow in the
renal arteries (those supplying the kidneys) in patients with
high blood pressure and those suspected of having kidney
disorders. Narrowing of a renal artery is a cause of 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. Also done in
prospective kidney donors.