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Dates: during 1940-1949
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...prescribed dosage of 100 roentgens had been delivered to the patient, it shut itself off. "O.K.," said Laughlin, "that's it." Thus the University of Illinois unveiled its betatron, the first of such power to be used in the U.S. for medical treatment.* Its advantage over earlier X-ray producers, most of which generate no more than a sixtieth of its power, is in the penetrating power of its high-speed, ultra-shortwave rays. Ordinary rays do most of their work at the skin surface or just below it, and are then dissipated. In large doses they cause serious...
...almost irresistible rays. Patients with deep-seated malignancies in other parts of the body also started treatment this week. Soon Dr. Harvey should be able to tell whether medicine's new weapon, which now costs $85,000, shows promise. If the answer is favorable, high-powered, penetrating X rays may be used in about 10% of cancer cases.* Whether they give lasting results cannot be known for several years...
...betatron is not basically a producer of X rays, but of high-speed electrons. Since little is yet known about the effect of electrons on the human body, they are not used directly. Instead, a superbarrage of electrons is fired against a platinum target, which then gives off the X rays...
...been used experimentally to treat eight patients since February. Directors of the Canadian project are not yet ready to report results. * Patients with cancer so widespread as to be considered hopeless will not be treated with the betatron. Also, many common types of cancer cells do not yield to X-ray treatment...
This week, Behr-Manning began foiling imitators. Henceforth, its trademark will be stamped with a special ink on every piece of Norzon. Even when hidden by the lining, the stamp will show up under an X-ray machine such as many shoe stores now use for fitting...