The practicing radiologist is continually challenged to update his/her competencies so as to deliver state-of-the-art radiological care. Nowhere is this truer than in the rapidly evolving world of magnetic resonance imaging, where innovations in both technology and diagnostic pharmaceuticals have dramatically altered the landscape of practice. MR imaging plays an important role in the management of patients with liver disease, permitting not only the detection of benign and malignant hepatic masses but also the characterization of focal and diffuse liver lesions in a single non-invasive examination. The excellent soft tissue contrast achievable on MR imaging permits accurate assessment of both the full extent of tumor infiltration and of.