@stevie17, is right. Radioembolization is also known as Y-90, a minimally invasive treatment for liver cancer. From Mayo Clinic
"Radioembolization is a form of transarterial therapy in which small radioactive particles are administered directly into the blood vessels supplying the liver. There they accumulate inside tumors and emit radiation to suppress tumor growth. These radioactive particles contain yttrium-90, also referred to as Y-90, which radiates less than half an inch into adjacent tissue and limits the amount of liver exposed to radiation."

Read more here:
- Mayo Clinic Q and A: Y-90 therapy offers many benefits in treatment of liver cancer https://newsnetwork.mayoclinic.org/discussion/mayo-clinic-q-and-a-y-90-therapy-offers-many-benefits-in-treatment-of-liver-cancer/
- Targeted radiation therapy: Y-90 and liver cancer https://www.mayoclinichealthsystem.org/hometown-health/speaking-of-health/targeted-radiation-therapy

@shorthairptr66, is radioembolization an option for you? Were you able to get insurance to cover the treatment?