ABSTRACT
Objective To observe the characteristic changes in cardiac function and to raise diagnostic accuracy and sensibility.Methods 39 silent myocardial ischemia and 58 angina and 46 age-matched healthy subjects and 62 obsolete myocardial infarction underwent myocardial tomography imaging and gated ventricular imaging.Covariance analysis was used to compare difference between SPECT imaging and parameters of function.The age was tested as covariate factor,then SNK-Q test and multiple comparison were carried on.Results The silent myocardial ischemia and angina showed reversible radioactive defect or fixed defect.Most of myocardial SMI showed single peak exempt TPFR.EF,PFR and PER showed remarkably statistical difference (P<0.01).The multiple comparison of PFR and PER was increased according by OMI,AN,SMI and negative control group (P<0.05).Conclusions The myocardial damage and PFR,PER in SMI is lower than that in AN group,which have no remarkably influence on the parameters of diastolic and retractile function in left ventricular.