Magnetic resonance imaging is a noninvasive medical diagnostic test that does not use X-rays, but creates a strong magnetic field is obtaining accurate images of the heart and vessels from many views. The signals emitted electromagnetic waves are collected and translated into images that can be observed on a monitor, allowing the clinician to study. Cardiac MRI are used especially to evaluate or diagnose the severity of heart damage following myocardial infarction and to detect the presence of tumors or masses in the heart muscle. This test typically takes 30 to 60 minutes and requires prior preparation of the patient. Furthermore, with this tool experts can perfectly distinguish the different anatomical structures for a clearer and more complete diagnosis.