My chemo was through an IV takes about three hours once every three weeks, I don’t know anything about the other kind you were talking about, the Xovigo is radiation isotopes injected into your bloodstream like an IV it goes into the bones where the cancer is just like calcium is absorbed into your bones and it kills the cancer there’s a real good video on YouTube type in xovigo There’s a doctor that gives a good detail about the treatment you can learn a lot on YouTube look up anything you want see if that helps