Word: indium
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Dates: during 1970-1979
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Bone to Blood. Current interest is focused on two isotopes of indium and gallium. At Ohio State University, Radiologists William W. Hunter Jr. and Xavier J. Riccobono worked with indium Ill, which was produced in the campus cyclotron. Using a special scanner, they found that the radioisotope concentrated heavily in bone in the first 24 hours after intravenous injection. As a result, X-ray photographs taken after the first day tended to reveal bone cancer. Even better, the radioactive molecules then joined proteins in the blood, concentrating in young, fast-growing tumors, thus revealing the sites of other cancers...
...front runner among today's diagnostic radioisotopes is gallium 67. Like indium, it can be virtually hand-crafted any time in any cyclotron. It, too, has a half-life of approximately three days-just right for selective concentration in a series of body tissues...