TheraSpheres/Y=90 possible for stage 4 patients?

Hi everyone.

My girlfriend just got diagnosed a stage 4 liver cancer.

Most of the cancer cells are located on an artery inside the liver if I understood well.

Surgery is impossible they say.

So, I want to know if stage 4 patients can possibly get the Y90 treatment or if it is applied only on earlier stages.

Thanks in advance for your answers.

Cheers