NATIONAL CANCER INSTITUTE / SCIENCE PHOTO LIBRARY NATIONAL CANCER INSTITUTE / SCIENCE PHOTO LIBRARY
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Henry Kaplan (1918-1984), US radiologist, at his microscope. Kaplan invented the first medical linear accelerator, which was used for radiation therapy. The six million volt machine was first used in 1955, and the first patient to be fully cured by linear accelerator radiation therapy was Gordon Isaacs in 1957. Kaplan's main work was on Hodgkin's disease, which was fatal before radiotherapy was used. Kaplan was the first radiologist elected to the National Academy of Sciences in 1972. Photographed at Stanford University, California, USA, in 1979.
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