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yttrium Y 90 glass microspheres An injectable formulation of yttrium Y 90 consisting of glass microspheres containing the radioisotope yttrium Y 90. When injected into the tumor vascular bed, yttrium Y 90 glass microspheres occlude tumor blood vessels and deliver a cytotoxic dose of beta radiation to the tumor site, thereby reducing the tumor burden. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
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US brand name: | ![](https://webarchive.library.unt.edu/eot2008/20081005055554im_/http://www.nci.nih.gov/images/spacer.gif) | TheraSphere | | ![](https://webarchive.library.unt.edu/eot2008/20081005055554im_/http://www.nci.nih.gov/images/spacer.gif) |
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