Hyperenhancement patterns that one may encounter in clinical practice. If hyperenhancement is present, the endocardium should be involved in patients with ischemic disease. Isolated midwall or epicardial hyperenhancement strongly suggests a nonischemic etiology. Reproduced with permission from Shah DJ, Judd RM, Kim RJ. Myocardial Viability. In: Edelman RR, Hesselink JR, Zlatkin MB, Crues JV, eds. Clinical Magnetic Resonance Imaging. 3rd ed. New York, NY: Elsevier; 2006.