This thesis focuses on one aspect of cardiac magnetic resonance imaging (MRI) for noninvasive screening of ischemic heart disease: the identification and quantification of acutely infarcted myocardium using gadolineum-diethylene triamine pentaacetic acid (Gd-DTPA) enhanced T1-weighted MRI in a clinical and experimental setting. (author). 296 refs.; 34 figs.; 4 tabs.