abstract |
The present invention provides a radioactive microsphere and a radioactive filler composition, the radioactive microsphere includes glass represented by the chemical formula Ca 3 Si 2 O 7 and yttrium oxide contained in the glass, and the sphericity of the radioactive microsphere is 0.71 to 1, wherein the radioactive microspheres are radioactive after being irradiated by neutron activation. In the present invention, the radioactive microspheres are delivered to the target tissue for neutron activation to generate radiation to treat tumors, and the radioactivity of the microspheres disappears with time, and finally can be dissolved and absorbed by bone tissue. |