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This document discusses what happens before, during, and after a computed tomography scan.... Details >

American Society of Radiologic Technologists  

This fact sheet describes the CT scan procedure and technology and its uses in diagnostics and treatment.... Details >

National Cancer Institute, National Institutes of Health

Cardiac computed tomography (to-MOG-rah-fee), or cardiac CT, is a painless test that uses an x-ray machine to take clear, detailed pictures of your heart. It's a common test for showing problems of th... Details >

National Heart, Lung, and Blood Institute, National Institutes of Health

Currently some medical imaging facilities are promoting a new use of computed tomography (CT), also called computerized axial tomography (CAT) scanning. This use is referred to as whole-body CT scanni... Details >

Center for Devices and Radiological Health, U.S. Food and Drug Administration