Radium-223
= Radium-223
{wiki=Radium-223}
Radium-223 (Ra-223) is a radioactive isotope of radium. It is part of the actinide series and is produced through the decay of uranium and thorium. Radium-223 has a half-life of about 11.43 days and emits alpha particles as it decays. Radium-223 has been studied and used in the medical field, particularly in the treatment of metastatic prostate cancer that has spread to the bones.