Diffusion MRI of the Abdomen

Inclusion Criteria for Healthy Volunteers: * 18 years of age or older Exclusion Criteria for Healthy Volunteers: * Patients with contraindication to MRI (e.g. pacemaker, contraindicated metallic implants, claustrophobia, etc) * Pregnant or trying to become pregnant (as determined by self-report during MRI safety screening) Inclusion Criteria for Patients: * 18 years of age or older * Patients with at least one of the following: * Radiologically visible solid tumor liver metastasis, with at least one metastatic liver lesion must be a minimum of 8 mm in longest diameter * Patients presenting for liver lesion biopsy Exclusion Criteria for Patients: * Patients with contraindication to MRI (e.g. pacemaker, contraindicated metallic implants, claustrophobia, etc) * Patients with known contraindication to GBCA such as severe kidney disease or previously documented GFR \< 30 ml/min/1.73 m2 * Patients requiring intravenous (IV) conscious sedation for imaging are not eligible; patients requiring mild, oral anxiolytics for the MRI will be allowed to participate as long as the following criteria are met: * The subject has their own prescription for the medication. * The informed consent process is conducted prior to the self-administration of this medication * They come to the research visit with a driver * Pregnant or trying to become pregnant (as determined by self-report during MRI safety screening) * Stent in bile ducts * Partial hepatectomy