 The purpose of this protocol is to provide supervised access at this institution to TheraSphere treatment for a heterogeneous population of patients with unresectable primary liver tumors, with the liver being the only dominant site of disease. Based on experience gained in previous studies and well-established interventional radiology techniques, this protocol allows multiple treatments with TheraSphere that may be delivered on an inpatient or out patient basis. Patients may receive a single dose to the whole liver, or lobar treatment delivered as a sequence of treatments approximately 30 - 90 days apart. The investigator, working with co-investigators in radiation oncology, interventional radiology and nuclear medicine, will develop a specific treatment plan for each patient, based upon the presenting condition of the patient, the vascular anatomy, and the desired goal of treatment. 