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radium-226 |
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radium-226, a radioactive isotope used for most of the twentieth century to fill the needles and tubes required for brachytherapy. It is now being replaced by cesium-137 and cobalt-60, which have similar energy characteristics but are not subject to hazardous leakage as radium sources sometimes are. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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