Inclusion Criteria for Aim 1:  Healthy volunteers:  Inclusion Criteria: Adults (>18 years) with no known liver pathology Exclusion Criteria: (a) contraindications to MRI and/or contrast agent  Patients:  Inclusion Criteria: Adults (>18 years) with known cirrhosis and known small, low-risk Gastroesophageal varices (GEV) (n=7) or large, high-risk GEV (n=7)1  Inclusion criteria for Aim 2-4:  Adults (>18 years) with known cirrhosis scheduled for EGD to assess for GEV.  Exclusion Criteria  Contraindications to MRI and/or contrast agent; Recent treatment (< 1 year) for varices; Recent (<1 year) prior GEV bleeding; Known occlusive thrombus in portal vein; splenic vein, or superior mesenteric vein; Large hepatocellular carcinoma (HCC) with known PV involvement.