CapTemY90 for Grade 2/3 NET Liver Metastases

Inclusion Criteria: * Patients with confirmed diagnosis of histologic grade 2 or 3 well differentiated neuroendocrine tumor with unresectable liver metastases (primary tumor or other extrahepatic disease may be present) * Patients with at least one measurable liver metastases, with size \> 1cm (RECIST criteria) * Patients with liver dominant disease defined as ≥50% tumor body burden confined to the liver * Liver tumor burden does not exceed 50% of the liver volume * Patent main portal vein * At least 4 weeks since last administration of last chemotherapy and /or radiotherapy * Age \>18 years. * Life expectancy of greater than 6 months. * ECOG performance status 0-2. * Adequate liver function as measured by: Total bilirubin ≤ 2.0mg/dl, ALT, AST ≤5 times ULN, albumin ≥2.5g/dl. * Patients must have adequate organ and marrow function as defined below: * platelets \>100,000/mcL (may be corrected by transfusion) * serum creatinine \< 2.0 mg/dl * INR \<1.6, (may be corrected by transfusion) * Ability to understand and the willingness to sign a written informed consent document. * Women of child bearing potential and fertile men are required to use effective contraception (negative urine or serum βHCG for women of child-bearing age) Exclusion Criteria: * Contraindications to capecitibine or temozolomide * Contraindicated for both contrast-enhanced MRI and CT * Patients previously treated with transarterial embolization (with or without chemotherapy) or with radioembolization (Y-90 microspheres) * Contraindication for radioembolization procedures: * excessive hepatopulmonary shunt as determined by the investigator * inability to deliver Y90 microspheres without risk of non-target embolization of extra-hepatic structures * Subjects consenting to the trial who fail their simulation angiography will be removed from the study and replaced. * Patients may not be receiving any other investigational agents. * Absolute contraindication to intravenous iodinated contrast (Hx of significant previous contrast reaction, not mitigated by appropriate pre-medication). * Choledochoenteric anastomosis, transpapillary stent or sphincterotomy of duodenal papilla; * Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements. * Pregnant and lactating women are ineligible