A computed tomography angiogram (CT angiogram) is a test that uses X-rays to provide detailed pictures of the heart and the blood vessels that go to the heart, lung, brain, kidneys, head, neck, legs, and arms.
A CT angiogram can show narrowed or blocked areas of a blood vessel. The test can also show whether there is a bulge (aneurysm) or a buildup of fatty material called plaque in a blood vessel. During a CT angiogram, you lie on a table that passes through a doughnut-shaped opening in the scanner.
If you are having a CT angiogram to look at your heart and the blood vessels that go to it (coronary arteries), you may be given a medicine called a beta-blocker to slow your heart rate during the test.
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