A computed tomography angiography is a test used to examine arterial and venous vessels in all parts of the body. The test uses X-rays and computerized analysis to give a visual image of the regions being examined. Doctors mainly use this test to examine the brain, lungs, heart, head, neck, legs and arms, according to WebMD.
Computerized tomography angiography may sometimes be referred to as CTA or CT angiography. This test can help doctors determine whether or not a vessel is blocked. It equally shows the size of the blockage and the exact location. Doctors use this information to determine the best course of action with regards to treatment.
Doctors may use this test when they suspect a patient may be having a blood clot in the lungs. Symptoms of a tumor may equally lead doctors to carry out this test. Other conditions that ay elicit a CT angiography test include heart complications, blockage in the arteries, narrowing of veins in the legs and bulge or tear in the aorta.
Before going through this test, doctors may require patient information including whether or not they are pregnant or breastfeeding. Other information that may be helpful is whether the patient has any medical conditions or is afraid of small spaces, notes WebMD.