A prognostic study of dipyridamole- thallium myocardiac imaging was conducted with use of logistic regression. Over a 5 years follow- up period

cardiac events occurred in 13 patients within the 41 patients tested

death in 5 and myocardiac infarction in .8. The results of this study indicates that dipyridamole- thallium imaging has significant prognostic utility and that an abnormal scan increased the relative risk for the development of subsequent myocardial infarction or cardiac death （O.R. = 18.54）. The presence of transient multiple thallium defects further increased the risk of a cardiac event. In conclusin

intravenous dipyridamole-thallium imaging is a potentially useful diagnostic test to determine the presence and severity of coronary diseases

and this noninvasive method is also beneficial for prognosis.