CT Perfusion Scans in Detecting Changes in Blood Flow to the Liver After Portal Vein Embolization

PRIMARY OBJECTIVES: I. To assess whether perfusion changes to the liver following portal vein embolization (PVE) correlate with hypertrophy of the future liver remnant (FLR). SECONDARY OBJECTIVES: I. To assess perfusion changes to liver tumors following PVE. II. To assess whether PVE may affect tumor growth. OUTLINE: Prior to PVE, patients undergo CT perfusion scan of the liver and liver biopsy over 15 minutes. Patients undergo a second CT perfusion scan immediately after PVE and a third CT perfusion scan 3-6 weeks post PVE.