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A computed tomography scan (CT scan), formerly called computed axial tomography scan (CAT scan), is a medical imaging technique used to obtain detailed internal images of the body. [2] The personnel that perform CT scans are called radiographers or radiology technologists.
Hounsfield's prototype CT scanner A historic EMI-Scanner Mark I, alongside the minicomputer used to process the CT image data. The history of X-ray computed tomography (CT) dates back to at least 1917 with the mathematical theory of the Radon transform.
Robert Ledley at the exhibit of the ACTA whole-body CT scanner at the Smithsonian’s National Museum of American History. Ledley is most widely known for his 1970s efforts to develop computerized tomography (CT) or CAT scanners. This work began in 1973, when the NBRF lost most of its NIH funding due to federal budget cuts.
CueCat barcode scanner and interposer cables with male and female PS/2 connectors. The CueCat, styled :CueCat with a leading colon, is a cat-shaped handheld barcode reader designed to allow a user to open a link to an Internet URL by scanning a barcode. The devices were given away free to Internet users starting in 2000 by the now-defunct ...
The first generation of scanners was a head scanner while a later generation was a torso (whole-body) scanner. The CAT-3 (computerized axial tomography) system was a success at first, but the technology surrendered ground to PET (positron emission tomography) and MRI (magnetic resonance imaging) systems. Artronix closed its doors in 1978.
In conventional CT machines, an X-ray tube and detector are physically rotated behind a circular shroud (see the image above right). An alternative, short lived design, known as electron beam tomography (EBT), used electromagnetic deflection of an electron beam within a very large conical X-ray tube and a stationary array of detectors to achieve very high temporal resolution, for imaging of ...
Hounsfield built a prototype head scanner and tested it first on a preserved human brain, then on a fresh cow brain from a butcher’s shop, and later on himself. On 1 October 1971, CT scanning was introduced into medical practice with a successful scan on a cerebral cyst patient at Atkinson Morley Hospital in Wimbledon, London, United Kingdom ...
William "Bill" Oldendorf was born in 1925, the youngest of four children, in Schenectady, New York.According to his sister Dorothy, William developed an interest in science and imaging through his fascination with telescopes.