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Get Technical! Read the Journal Article 

Source: Ohio State University's Wright Center of Innovation in Biomedical Imaging

Radioembolization, also known as Y-90 microsphere therapy, is a treatment used to protect healthy tissues by delivering tiny spherical structures made of glass or resin directly to the tumor through the hepatic artery, a major blood vessel of the liver. This form of targeted radiotherapy uses Yttrium-90, a radionuclide, which is carried by the spheres and isolated to the affected organ. The microspheres pack a powerful dose of radioactivity that destroys the malignant tissues while protecting nearby organs. Prior to therapy, molecular imaging can be used to map the likely path of these microspheres in order to predict the success of treatment and to help select the best candidates for therapy.