What is a Computed Tomography Scan (CT) or Computerized Axial Tomography Scan (Cat Scan)?
A computed tomography scan (CT) or computerized axial tomography scan (CAT scan) is a specialized type of X-ray that produces 3-dimensional images of a cross section of the body. The test is painless, and is designed to obtain the maximum amount of information with the least amount of exposure to radiation. A CT scan produces more detailed images of internal organs and other body structures than regular X-rays, and is therefore better for diagnosing some conditions. The patient lies on an examination table, which moves slowly into the CT scanner until the area of the body to be studied is positioned correctly. An X-ray tube focuses a narrow beam of X-rays through the body. The tube rotates around the body, taking thousands of readings, which are analyzed by a computer to produce 3-dimensional images of a cross section or slice of the body. The test is performed by a state licensed, ARRT (American Registry of Radiological Technologists) certified technologist. Although the technologist
