In the first year of this century Wilhelm Roentgen won the very first Nobel Prize in physics, for the discovery of a phenomenon which, in a remarkably short time, revolutionized medical diagnosis. On 11 October the Karolinska Institute announced that this year's Nobel Prize for Physiology and Medicine has been awarded jointly to a physicist and an engineer, for their contributions to what is widely regarded as the most revolutionary development in radiography since Roentgen's discovery of x rays. Allan Cormack, professor of physics at Tufts University (Medford, Mass.) and Godfrey Hounsfield, head of the medical‐research division at EMI Ltd. (Middlesex, England) were awarded the Prize for their separate contributions to the development of computer‐assisted tomography (see PHYSICS TODAY, December 1977, page 32).

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