Suzanne, again I will chime in, but I am new at this too. As I understand it:
Radioembolization is the same as chemoembolization in terms of method, but uses a radioactive material instead. That places some limitations on the patient as they are radioactive for a few days and can’t be around pregnant women or small children or sleep in the bed with their spouse, etc as proximity is the key.
Additionally, my dad’s oncologist explained that radio can cause arterial damage that could prohibit further treatment, so he likes to begin with chemo since it doesn’t cause the same damage.
Check out sirtex.com also for a specific radio treatment that seems to have good results.