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Encyclopedia > Allan M. Cormack

Allan McLeod Cormack (February 1924 - May 7, 1998) was a South Africa-born American physicist who shared a part of the 1979 Nobel Prize in Physiology or Medicine for his work on the computerized axial tomography (CAT) scan.


Cormack was born in Johannesburg, South Africa. He received his Bachelor of Sciences degree in physics in 1944 from the University of Cape Town and his master's degree in crystallography in 1945 from the same institution. He worked at Cambridge University, then returned to the University of Cape Town to lecture. While at Cambridge, he met his future wife, Barbara Seavey, an American physics student.


After marrying Seavey, the couple agreed to move to the United States. Following a sabbatical at Harvard, Cormack became a professor at Tufts University in 1958. Cormack became a US citizen in 1966. Although he was mainly working on particle physics, Cormack's side interest in x-ray technology led him to develop the theoretical underpinnings of CAT scanning. His results were published in two papers in the Journal of Applied Physics in 1963 and 1964. These papers generated little interest until Godfrey Newbold Hounsfield and colleagues built the first CAT scan machine in 1972, taking Cormack's theoretical calculation into a real application. For their independent efforts, Cormack and Hounsfield shared the 1979 Nobel Prize in Physiology or Medicine.


Cormack died of cancer in Massachuetts at age 74.


External links

Nobel Prize Biography (http://www.nobel.se/medicine/laureates/1979/cormack-autobio.html)








  Results from FactBites:
 
CT-Scan (555 words)
Nadelen zijn vooral de sterkere stralingsbelasting ten opzichte van conventionele röntgenfoto's (1 CT-scan is ruwweg het equivalent van 200 röntgenfoto's), en de kostbare apparatuur die de prijs van het onderzoek ook hoog maakt.
Het duurde ongeveer 9 uur voor het nog vrij grove beeld van de hersenen van een vrouwelijke patiënt beschikbaar was, maar de doorbraak had plaatsgevonden en het zoeken naar verbeteringen in de CT-techniek werd met kracht voortgezet.
In 1979 kregen Hounsfield en Cormack de Nobelprijs voor Geneeskunde.
Allan McLeod Cormack Summary (2380 words)
Allan M. Cormack is a physicist whose theoretical analysis and experiments in the fields of nuclear and particle physics, computer tomography and math led to his invention of a mathematical technique for computer-assisted X-ray tomography.
Allan M. Cormack was a physicist whose theoretical analysis and experiments in nuclear and particle physics, computer tomography, and math led to his invention of a mathematical technique for computer-assisted x-ray tomography, which revolutionized noninvasive medical diagnosis.
Cormack was the first to analyze the possibility of such an examination of a biological system in 1963 and 1964, and to develop the equations needed for computer-assisted x-ray reconstruction of pictures of the human brain and body.
  More results at FactBites »


 

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