Microspheres for radiation therapy of a mammal which have a non-radioactive isotope which emits beta or gamma radiation of therapeutic intensity upon being irradiated. The microspheres also contain elements which do not become radioactive upon irradiation. The chemical durability of the microspheres is such that they do not release a significant amount of radiation emitting radioisotope into the mammal’s system upon administration. Microspheres containing phosphorus or yttrium; and carbon, nitrogen, fluorine, sodium, magnesium, aluminum, silicon, potassium, vanadium, manganese, gallium, niobium, iodine and/or lead.
D. E. Day and G. J. Ehrhardt, "Microspheres for Radiation Therapy," U.S. Patents, Apr 1994.
Materials Science and Engineering
Patent Application Number
© 1994 The Curators of the University of Missouri, All rights reserved.
12 Apr 1994