two flow algorithms derived from characteristics of the contrast clearance curves showed a good correlation with regional myocardial flow determined by microspheres : the ratio of the peak myocardial opacification from baseline to the area under the left ventricular cavity curve ( r = 0.7 , p less than 0.001 , see = 44.4 ml/min ) , and the ratio of the left ventricular cavity to posterior papillary muscle curve areas divided by the full width/half maximal contrast transit time in the region of the posterior papillary muscle ( r = 0.82 , p less than 0.001 , see = 52.2 ml/100 g per min ) .
C0027061
myocardial
C0030352
papillary muscle