Consecuences of the Trial (image) Centro Nacional de Investigaciones Cardiovasculares Share Print E-Mail Caption Left: This is a magnetic resonance of a heart after a myocardial infarction. Right: This is a schematized representation of the same heart. 1: left ventricle, 2: left atrium, 3: right ventricle. The largest muscle of the heart is the left ventricle. Healthy muscle appears black in the MRI scan. After an acute myocardial infarction, the region of the muscle undergoing necrosis appears white upon injection of a contrast agent. In this scan, obtained at the CNIC, a large part of the left ventricle has been permanently damaged (arrows). Credit CNIC Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.