| abstract |
Provided are radiopaque compositions comprising one or more of yttrium (Y), strontium (Sr), gallium (Ga), and silicon, or oxides and salts thereof. The composition can comprise a combination of Y 2 O 3 , SrO, Ga 2 O 3 , and SiO 2 , and optionally MnO 2 , and TiO 2 . Other compositions comprise SrO, Ga 2 O 3 , TiO 2 , MnO 2 , and SiO 2 . The composition can be a particulate material. The compositions are useful for radioembolization to treat tumors. |