from the short axis data algorithms determine mean and minimum activity levels in the anterior , septal , lateral , inferior and apical regions of the myocardium , percent of the cardiac image in specific ranges of activity levels or their changes and the percent of myocardium beyond 1.5 , 2.0 , and 2.5 standard deviations from the normal range with blackout display of the areas beyond these statistical limits for rest , stress , and stress/rest ratio polar maps .
C0018787
cardiac
C0027061
myocardium