Figure 2a. Wall thickening analysis of short-axis cine MR images obtained in a 71-year-old man with chronic myocardial infarction in the region of the left anterior descending artery. (a) Delayed-enhancement short-axis image obtained with gadolinium-based contrast material shows transmural hyperenhancement (arrows) in the thinned myocardial wall of the septum and in the anterior wall corresponding to scar tissue. (b) The endocardial and epicardial contours are diagrammed on the SSFP image. Chords for measuring wall thickness are shown along the left ventricular circumference. (c) Bull's-eye plot shows the extent of wall thickening. The smallest ring represents the apical region, and the largest ring represents the basal region. There is reduced thickening (from 0%-30%) in the scar tissue and surrounding myocardium (arrowheads) compared with thickening of more than 200% in the remote myocardium (arrows).