TheraSphere™ Y-90 Glass Microspheres

Designed for control to achieve durable outcomes, TheraSphere is a targeted radioembolization therapy made of glass microspheres containing radioactive Yttrium-90 (Y-90). TheraSphere is uniquely engineered to have unmatched radiation per microsphere (RPM) to maximize dose to tumor and minimize dose to healthy tissue.

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Durability leads to quality of life

TheraSphere delivers durable patient outcomes and reproducible results to you and your multi-disciplinary team, while also preserving patient quality of life.

Clinical data since 1999 shows TheraSphere is a proven, evidence-based therapy across different HCC stages, with more than 100,000 patient treatments globally.


Reproducible results backed by Dosimetry Steering Committee recommendations

Key updates from an international multidisciplinary working group provide dosing recommendations based on contemporary clinical data, including results from TheraSphere landmark studies LEGACY, TARGET and DOSISPHERE-01 Trial.