Patent ID: 9539347
Date: 2017-01-10
CPC Classifications: A61B,A61K,A61N,A61P

Claim:
1. Low density microspheres for radio-imaging in a mammal, comprising a biologically compatible magnesia-alumina-silica glass microspheres having a density of about 3.0 g/ml or less and a size range from about 20 to 200 um, said microspheres containing gallium -68 or fluorine-18 distributed substantially throughout the magnesia-alumina-silica glass, the microspheres having a chemical durability such that subsequent to administration of the microspheres to the mammal, the microspheres will not release a significant amount of the radioisotope into the mammal's system; wherein the glass microspheres comprise 8-14 wt % MgO, 32-35 wt % Al 2 O 3 , and 47-52 wt % SiO 2 .