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108 ±49, p< 0.001) yieldingimages of higherstatistics withhigherresolutioncollimation (31 versus63 msr). Left ventricularejectionfractionwas 0.54 ±0.18 by MWGCand 0.54 ±0.18 by MCCwith anexcellentcorrelationbetweenthe two techniques (r= 0.94, see= 0.06). ThedetectionofwallmotionabnormalitywasVirtUallyidenticalwiththetwotechniques. Intra and interobserverreproducibilftyby MWGCwas excellent (r= 0.99 and 0.99, respectively). Thus, thisnewtechnologyprovidesfirst-passstudiesofhigherstatisticalqualityand improvedresolution, affordingmorepreciseassessmentof left ventricularperformanceand likelihoodof furthersubstantialimprovementby useof evenhigherdosesof 11@ Ta.